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Fix vacuuming of tuples that were updated while key-share locked (Andres Freund, Álvaro Herrera)
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Fix failure to mark a hash index's metapage dirty after adding a new overflow page, potentially leading to index corruption (Lixian Zou, Amit Kapila)
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Fix handling of list partitioning constraints for partition keys of boolean or array types (Amit Langote)
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Fix spurious deadlock failures when multiple sessions are running CREATE INDEX CONCURRENTLY (Jeff Janes)
During VACUUM FULL, update the table's size fields in pg_class sooner (Amit Kapila)
This prevents poor behavior when rebuilding hash indexes on the table, since those use the pg_class statistics to govern the initial hash size.
Fix UNION/INTERSECT/EXCEPT over zero columns (Tom Lane)
Disallow identity columns on typed tables and partitions (Michael Paquier)
\nThese cases will be treated as unsupported features for now.
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\nIn several contexts, notably COPY and ALTER TABLE ADD COLUMN, the expected default value was not applied and instead a null value was inserted.
Fix failures when an inheritance tree contains foreign child tables (Etsuro Fujita)
\nA mix of regular and foreign tables in an inheritance tree resulted in creation of incorrect plans for UPDATE and DELETE queries. This led to visible failures in some cases, notably when there are row-level triggers on a foreign child table.
Repair failure with correlated sub-SELECT inside VALUES inside a LATERAL subquery (Tom Lane)
Fix “could not devise a query plan for the given query” planner failure for some cases involving nested UNION ALL inside a lateral subquery (Tom Lane)
Allow functional dependency statistics to be used for boolean columns (Tom Lane)
\nPreviously, although extended statistics could be declared and collected on boolean columns, the planner failed to apply them.
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\nCases similar to SELECT DISTINCT unnest(foo) got a lower output rowcount estimate in 10.0 than they did in earlier releases, possibly resulting in unfavorable plan choices. Restore the prior estimation behavior.
Fix use of triggers in logical replication workers (Petr Jelinek)
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\nLogical decoding may spill WAL records to disk for transactions generating many WAL records. Normally these files are cleaned up after the transaction's commit or abort record arrives; but if no such record is ever seen, the removal code misbehaved.
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", "text": "Fix walsender timeout failure and failure to respond to interrupts when processing a large transaction (Petr Jelinek)", "title": "Fix walsender timeout failure and failure to respond to interrupts when processing a large transaction", "commits": [], "section": "Changes", "category": "bugfix", "source_url": "/docs/release/10.2/#id-1.11.6.26.5", "source_hash": "4012eee6104e7045ad8e5177378e7628160bb67aa666a89682fc80111f225ece", "section_path": ["Changes"], "commit_groups": [["0fedb4ea6", "14c15b1f4", "87056267e", "c28e0b1e0", "f5c7e0cdd"]], "identity_text": "Fix walsender timeout failure and failure to respond to interrupts when processing a large transaction (Petr Jelinek)", "commit_aliases": ["0fedb4ea6", "14c15b1f4", "87056267e", "c28e0b1e0", "f5c7e0cdd"], "source_commits": ["14c15b1f4"], "source_entry_id": "10.2/changes/022", "db_id": "49d5a018edca09aa50a64ee6c2dcb3cf", "patch_ids": ["11a125a3898a1e7f2ff218373832fbad"], "statement_hash": "3688b7e06c4f12e21fd0acc9101d472bcb1ebb84425dc9932b6b565cc9913df2", "relations": [{"rule": 2, "type": "equivalent", "target": "04df9533a2e0c239993c4f25740c3f2c", "evidence": {"same_day": true, "patch_ids": [], "statement_hash": "3688b7e06c4f12e21fd0acc9101d472bcb1ebb84425dc9932b6b565cc9913df2"}}, {"rule": 2, "type": "equivalent", "target": "0641ecfcd209be620a7f15faf0c8b1d3", "evidence": {"same_day": true, "patch_ids": [], "statement_hash": "3688b7e06c4f12e21fd0acc9101d472bcb1ebb84425dc9932b6b565cc9913df2"}}, {"rule": 2, "type": "equivalent", "target": "8c59f13b8514866cfb7e0fec2a8151dc", "evidence": {"same_day": true, "patch_ids": [], "statement_hash": "3688b7e06c4f12e21fd0acc9101d472bcb1ebb84425dc9932b6b565cc9913df2"}}], "version": "10.2", "category_label": "Bug fixes", "also_in": [], "variants": [], "related_changes": [{"db_id": "04df9533a2e0c239993c4f25740c3f2c", "kind": "equivalent", "version": "9.6.7", "label": "9.6.7", "title": "Fix walsender timeout failure and failure to respond to interrupts when processing a large transaction", "evidence": {"same_day": true, "patch_ids": [], "statement_hash": "3688b7e06c4f12e21fd0acc9101d472bcb1ebb84425dc9932b6b565cc9913df2"}, "url": "/docs/compare/?release=9.6.7#9.6.7-7dce1a2a04a483ba", "source_url": "/docs/release/9.6.7/#AEN134783"}, {"db_id": "0641ecfcd209be620a7f15faf0c8b1d3", "kind": "equivalent", "version": "9.5.11", "label": "9.5.11", "title": "Fix walsender timeout failure and failure to respond to interrupts when processing a large transaction", "evidence": {"same_day": true, "patch_ids": [], "statement_hash": "3688b7e06c4f12e21fd0acc9101d472bcb1ebb84425dc9932b6b565cc9913df2"}, "url": "/docs/compare/?release=9.5.11#9.5.11-7dce1a2a04a483ba", "source_url": "/docs/release/9.5.11/#AEN129473"}, {"db_id": "8c59f13b8514866cfb7e0fec2a8151dc", "kind": "equivalent", "version": "9.4.16", "label": "9.4.16", "title": "Fix walsender timeout failure and failure to respond to interrupts when processing a large transaction", "evidence": {"same_day": true, "patch_ids": [], "statement_hash": "3688b7e06c4f12e21fd0acc9101d472bcb1ebb84425dc9932b6b565cc9913df2"}, "url": "/docs/compare/?release=9.4.16#9.4.16-7dce1a2a04a483ba", "source_url": "/docs/release/9.4.16/#AEN121175"}]}, {"id": "10.2-b8cd2d9757c16350", "cves": [], "html": "Fix race condition during replication origin drop that could allow the dropping process to wait indefinitely (Tom Lane)
", "text": "Fix race condition during replication origin drop that could allow the dropping process to wait indefinitely (Tom Lane)", "title": "Fix race condition during replication origin drop that could allow the dropping process to wait indefinitely", "commits": [], "section": "Changes", "category": "bugfix", "source_url": "/docs/release/10.2/#id-1.11.6.26.5", "source_hash": "62f15b74ccdcd4364f22d395631c6038e339ab70c2cc78a4b38b7c27c974f933", "section_path": ["Changes"], "commit_groups": [["1f5adbd79", "8a906204a"]], "identity_text": "Fix race condition during replication origin drop that could allow the dropping process to wait indefinitely (Tom Lane)", "commit_aliases": ["1f5adbd79", "8a906204a"], "source_commits": ["1f5adbd79"], "source_entry_id": "10.2/changes/023", "db_id": "cdafb00bd9dad626e98c759dd59f8105", "patch_ids": ["8657ed3f5cf6102c6908d42c70891def"], "statement_hash": "1dfeb8749ca032208c343f097bf375779eeb51eefffc03b500fc133dc3e4b1ae", "relations": [], "version": "10.2", "category_label": "Bug fixes", "also_in": [], "variants": [], "related_changes": []}, {"id": "10.2-6c0dcba95a159df7", "cves": [], "html": "Allow members of the pg_read_all_stats role to see walsender statistics in the pg_stat_replication view (Feike Steenbergen)
Show walsenders that are sending base backups as active in the pg_stat_activity view (Magnus Hagander)
Fix reporting of scram-sha-256 authentication method in the pg_hba_file_rules view (Michael Paquier)
Previously this was printed as scram-sha256, possibly confusing users as to the correct spelling.
Fix has_sequence_privilege() to support WITH GRANT OPTION tests, as other privilege-testing functions do (Joe Conway)
In databases using UTF8 encoding, ignore any XML declaration that asserts a different encoding (Pavel Stehule, Noah Misch)
\nWe always store XML strings in the database encoding, so allowing libxml to act on a declaration of another encoding gave wrong results. In encodings other than UTF8, we don't promise to support non-ASCII XML data anyway, so retain the previous behavior for bug compatibility. This change affects only xpath() and related functions; other XML code paths already acted this way.
Provide for forward compatibility with future minor protocol versions (Robert Haas, Badrul Chowdhury)
\nUp to now, PostgreSQL servers simply rejected requests to use protocol versions newer than 3.0, so that there was no functional difference between the major and minor parts of the protocol version number. Allow clients to request versions 3.x without failing, sending back a message showing that the server only understands 3.0. This makes no difference at the moment, but back-patching this change should allow speedier introduction of future minor protocol upgrades.
", "text": "Provide for forward compatibility with future minor protocol versions (Robert Haas, Badrul Chowdhury) Up to now, PostgreSQL servers simply rejected requests to use protocol versions newer than 3.0, so that there was no functional difference between the major and minor parts of the protocol version number. Allow clients to request versions 3.x without failing, sending back a message showing that the server only understands 3.0. This makes no difference at the moment, but back-patching this change should allow speedier introduction of future minor protocol upgrades.", "title": "Provide for forward compatibility with future minor protocol versions", "commits": [], "section": "Changes", "category": "improvement", "source_url": "/docs/release/10.2/#id-1.11.6.26.5", "source_hash": "377e535b0d2196659f00fbd3a6ae6fe953dcbaa28c8c8c098d70355a9ea0733f", "section_path": ["Changes"], "commit_groups": [["294136d42", "5b2a87707", "7c84bc0b3", "aa3a78c3d", "ae65f6066", "c703aa625"]], "identity_text": "Provide for forward compatibility with future minor protocol versions (Robert Haas, Badrul Chowdhury) Up to now, PostgreSQL servers simply rejected requests to use protocol versions newer than 3.0, so that there was no functional difference between the major and minor parts of the protocol version number. Allow clients to request versions 3.x without failing, sending back a message showing that the server only understands 3.0. This makes no difference at the moment, but back-patching this change should allow speedier introduction of future minor protocol upgrades.", "commit_aliases": ["294136d42", "5b2a87707", "7c84bc0b3", "aa3a78c3d", "ae65f6066", "c703aa625"], "source_commits": ["5b2a87707"], "source_entry_id": "10.2/changes/029", "db_id": "3bca875f15d6646be2ba689accfac0d0", "patch_ids": ["cc37bd9aa5294ba4023ccfacc843bc63"], "statement_hash": "081ebb6ea2f10d0f8e9f995ca705489cb715775481b5634ab2e759b1fc27937f", "relations": [{"rule": 2, "type": "equivalent", "target": "4b25bdea5725fec36e838fba1cc4807f", "evidence": {"same_day": true, "patch_ids": [], "statement_hash": "081ebb6ea2f10d0f8e9f995ca705489cb715775481b5634ab2e759b1fc27937f"}}, {"rule": 2, "type": "equivalent", "target": "5808ced71469317610618ca1565949c6", "evidence": {"same_day": true, "patch_ids": [], "statement_hash": "081ebb6ea2f10d0f8e9f995ca705489cb715775481b5634ab2e759b1fc27937f"}}, {"rule": 2, "type": "equivalent", "target": "922f5e76b2fc8a6ef5a033bb14730ec4", "evidence": {"same_day": true, "patch_ids": [], "statement_hash": "081ebb6ea2f10d0f8e9f995ca705489cb715775481b5634ab2e759b1fc27937f"}}, {"rule": 2, "type": "equivalent", "target": "fc71934fa6f0e20f15e2a3d74cf2224c", "evidence": {"same_day": true, "patch_ids": [], "statement_hash": "081ebb6ea2f10d0f8e9f995ca705489cb715775481b5634ab2e759b1fc27937f"}}], "version": "10.2", "category_label": "Improvements", "also_in": [], "variants": [], "related_changes": [{"db_id": "922f5e76b2fc8a6ef5a033bb14730ec4", "kind": "equivalent", "version": "9.6.7", "label": "9.6.7", "title": "Provide for forward compatibility with future minor protocol versions", "evidence": {"same_day": true, "patch_ids": [], "statement_hash": "081ebb6ea2f10d0f8e9f995ca705489cb715775481b5634ab2e759b1fc27937f"}, "url": "/docs/compare/?release=9.6.7#9.6.7-021962a240435bb8", "source_url": "/docs/release/9.6.7/#AEN134783"}, {"db_id": "5808ced71469317610618ca1565949c6", "kind": "equivalent", "version": "9.5.11", "label": "9.5.11", "title": "Provide for forward compatibility with future minor protocol versions", "evidence": {"same_day": true, "patch_ids": [], "statement_hash": "081ebb6ea2f10d0f8e9f995ca705489cb715775481b5634ab2e759b1fc27937f"}, "url": "/docs/compare/?release=9.5.11#9.5.11-021962a240435bb8", "source_url": "/docs/release/9.5.11/#AEN129473"}, {"db_id": "4b25bdea5725fec36e838fba1cc4807f", "kind": "equivalent", "version": "9.4.16", "label": "9.4.16", "title": "Provide for forward compatibility with future minor protocol versions", "evidence": {"same_day": true, "patch_ids": [], "statement_hash": "081ebb6ea2f10d0f8e9f995ca705489cb715775481b5634ab2e759b1fc27937f"}, "url": "/docs/compare/?release=9.4.16#9.4.16-021962a240435bb8", "source_url": "/docs/release/9.4.16/#AEN121175"}, {"db_id": "fc71934fa6f0e20f15e2a3d74cf2224c", "kind": "equivalent", "version": "9.3.21", "label": "9.3.21", "title": "Provide for forward compatibility with future minor protocol versions", "evidence": {"same_day": true, "patch_ids": [], "statement_hash": "081ebb6ea2f10d0f8e9f995ca705489cb715775481b5634ab2e759b1fc27937f"}, "url": "/docs/compare/?release=9.3.21#9.3.21-021962a240435bb8", "source_url": "/docs/release/9.3.21/#AEN115635"}]}, {"id": "10.2-3d50cb19124f8abd", "cves": [], "html": "Allow a client that supports SCRAM channel binding (such as v11 or later libpq) to connect to a v10 server (Michael Paquier)
\nv10 does not have this feature, and the connection-time negotiation about whether to use it was done incorrectly.
", "text": "Allow a client that supports SCRAM channel binding (such as v11 or later libpq) to connect to a v10 server (Michael Paquier) v10 does not have this feature, and the connection-time negotiation about whether to use it was done incorrectly.", "title": "Allow a client that supports SCRAM channel binding (such as v11 or later libpq) to connect to a v10 server", "commits": [], "section": "Changes", "category": "improvement", "source_url": "/docs/release/10.2/#id-1.11.6.26.5", "source_hash": "b8b663726371e8dcc7b3086fbc5f08fee5937406e224d67e0ff27e2f5a4648c7", "section_path": ["Changes"], "commit_groups": [["218b024a7"]], "identity_text": "Allow a client that supports SCRAM channel binding (such as v11 or later libpq) to connect to a v10 server (Michael Paquier) v10 does not have this feature, and the connection-time negotiation about whether to use it was done incorrectly.", "commit_aliases": ["218b024a7"], "source_commits": ["218b024a7"], "source_entry_id": "10.2/changes/030", "db_id": "efd93f119ed850e0e2a00450abf5a370", "patch_ids": ["a96a372ec01cd72d09c9d7325358326b"], "statement_hash": "3bf43c19f251762323cd12c021adc99a474787a300e153628b0091b20de586fa", "relations": [], "version": "10.2", "category_label": "Improvements", "also_in": [], "variants": [], "related_changes": []}, {"id": "10.2-1a9b4da8f65b7c66", "cves": [], "html": "Avoid live-lock in ConditionVariableBroadcast() (Tom Lane, Thomas Munro)
Given repeatedly-unlucky timing, a process attempting to awaken all waiters for a condition variable could loop indefinitely. Due to the limited usage of condition variables in v10, this affects only parallel index scans and some operations on replication slots.
", "text": "Avoid live-lock in ConditionVariableBroadcast() (Tom Lane, Thomas Munro) Given repeatedly-unlucky timing, a process attempting to awaken all waiters for a condition variable could loop indefinitely. Due to the limited usage of condition variables in v10, this affects only parallel index scans and some operations on replication slots.", "title": "Avoid live-lock in ConditionVariableBroadcast()", "commits": [], "section": "Changes", "category": "improvement", "source_url": "/docs/release/10.2/#id-1.11.6.26.5", "source_hash": "c85216fa12a16201afba82dca2f62defee116f775d8106d31ba30b289838283f", "section_path": ["Changes"], "commit_groups": [["1c77e9908", "aced5a92b"]], "identity_text": "Avoid live-lock in ConditionVariableBroadcast() (Tom Lane, Thomas Munro) Given repeatedly-unlucky timing, a process attempting to awaken all waiters for a condition variable could loop indefinitely. Due to the limited usage of condition variables in v10, this affects only parallel index scans and some operations on replication slots.", "commit_aliases": ["1c77e9908", "aced5a92b"], "source_commits": ["1c77e9908"], "source_entry_id": "10.2/changes/031", "db_id": "f3f4c7cbe9b97e2f42c1cbe064fe9a85", "patch_ids": ["10006ded89ff3ba1b764dc9cf28b6ad9"], "statement_hash": "88a55bbd11077a63bbcfcd8b12aa320dbcc2d6b0d4b692531a253347613eb5d1", "relations": [], "version": "10.2", "category_label": "Improvements", "also_in": [], "variants": [], "related_changes": []}, {"id": "10.2-cf3132c7341536b6", "cves": [], "html": "Clean up waits for condition variables correctly during subtransaction abort (Robert Haas)
", "text": "Clean up waits for condition variables correctly during subtransaction abort (Robert Haas)", "title": "Clean up waits for condition variables correctly during subtransaction abort", "commits": [], "section": "Changes", "category": "improvement", "source_url": "/docs/release/10.2/#id-1.11.6.26.5", "source_hash": "0ded63b78a36361e5d75f91a17e358e841deeb7239c62e994f4dc18b592673ac", "section_path": ["Changes"], "commit_groups": [["59d1e2b95", "f3decdc94"]], "identity_text": "Clean up waits for condition variables correctly during subtransaction abort (Robert Haas)", "commit_aliases": ["59d1e2b95", "f3decdc94"], "source_commits": ["f3decdc94"], "source_entry_id": "10.2/changes/032", "db_id": "54bd6f3cf2901fa1891f50e0974e5b0c", "patch_ids": ["920db40c04ac2493ff4c4a8d96a7bcd7"], "statement_hash": "4558e2d30e0549c377ab97a936c31fa682b43f1be3df6d40acdcee1b1076e532", "relations": [], "version": "10.2", "category_label": "Improvements", "also_in": [], "variants": [], "related_changes": []}, {"id": "10.2-08c6f45230b05b5c", "cves": [], "html": "Ensure that child processes that are waiting for a condition variable will exit promptly if the postmaster process dies (Tom Lane)
", "text": "Ensure that child processes that are waiting for a condition variable will exit promptly if the postmaster process dies (Tom Lane)", "title": "Ensure that child processes that are waiting for a condition variable will exit promptly if the postmaster process dies", "commits": [], "section": "Changes", "category": "improvement", "source_url": "/docs/release/10.2/#id-1.11.6.26.5", "source_hash": "062c9360c73f82d21fb114e0e894f750a892a26443256dcc765cacffe437440c", "section_path": ["Changes"], "commit_groups": [["80259d4db", "d56a5f994"]], "identity_text": "Ensure that child processes that are waiting for a condition variable will exit promptly if the postmaster process dies (Tom Lane)", "commit_aliases": ["80259d4db", "d56a5f994"], "source_commits": ["d56a5f994"], "source_entry_id": "10.2/changes/033", "db_id": "9522db0ae1dc127c0a197eaa4b85bfec", "patch_ids": ["6d6a957b2b25f111f83cd612c68557c7"], "statement_hash": "7761756e30c44511bdf769f677c2fc45d6384c504d5807899b2e965a7a093d5c", "relations": [], "version": "10.2", "category_label": "Improvements", "also_in": [], "variants": [], "related_changes": []}, {"id": "10.2-15e2a7c1e56c3e17", "cves": [], "html": "Fix crashes in parallel queries using more than one Gather node (Thomas Munro)
", "text": "Fix crashes in parallel queries using more than one Gather node (Thomas Munro)", "title": "Fix crashes in parallel queries using more than one Gather node", "commits": [], "section": "Changes", "category": "bugfix", "source_url": "/docs/release/10.2/#id-1.11.6.26.5", "source_hash": "5bb2ed9db6e1644e4f7d49004752184902fbc0563e53438d02f0dee6df5aa971", "section_path": ["Changes"], "commit_groups": [["b70ea4c75", "fd7c0fa73"]], "identity_text": "Fix crashes in parallel queries using more than one Gather node (Thomas Munro)", "commit_aliases": ["b70ea4c75", "fd7c0fa73"], "source_commits": ["b70ea4c75"], "source_entry_id": "10.2/changes/034", "db_id": "e1eedfaa23947a44e6148bf47bba78ed", "patch_ids": ["24e405c42969ea586b26805d976ad341"], "statement_hash": "eb9ff822950b8f9eee92feee20182774319d1929b0ccdeed1561c53d421e19c3", "relations": [], "version": "10.2", "category_label": "Bug fixes", "also_in": [], "variants": [], "related_changes": []}, {"id": "10.2-bddb68fa1d7faa98", "cves": [], "html": "Fix hang in parallel index scan when processing a deleted or half-dead index page (Amit Kapila)
", "text": "Fix hang in parallel index scan when processing a deleted or half-dead index page (Amit Kapila)", "title": "Fix hang in parallel index scan when processing a deleted or half-dead index page", "commits": [], "section": "Changes", "category": "bugfix", "source_url": "/docs/release/10.2/#id-1.11.6.26.5", "source_hash": "ac3a3c1eababdbf83ba1a1bf61f936cf0c247ad90e5947e4206811abeffe0282", "section_path": ["Changes"], "commit_groups": [["192ffe1cb", "884a60840"]], "identity_text": "Fix hang in parallel index scan when processing a deleted or half-dead index page (Amit Kapila)", "commit_aliases": ["192ffe1cb", "884a60840"], "source_commits": ["192ffe1cb"], "source_entry_id": "10.2/changes/035", "db_id": "0699c16efa1bd18ebf2bc4ae9eb44c58", "patch_ids": ["960a97bf0ce78e41d8583db99ec6e96a"], "statement_hash": "1b97db03072ad106ababa514430b424929386b00a7b963e3d68a1c22af86c547", "relations": [], "version": "10.2", "category_label": "Bug fixes", "also_in": [], "variants": [], "related_changes": []}, {"id": "10.2-8ac512121881182f", "cves": [], "html": "Avoid crash if parallel bitmap heap scan is unable to allocate a shared memory segment (Robert Haas)
", "text": "Avoid crash if parallel bitmap heap scan is unable to allocate a shared memory segment (Robert Haas)", "title": "Avoid crash if parallel bitmap heap scan is unable to allocate a shared memory segment", "commits": [], "section": "Changes", "category": "bugfix", "source_url": "/docs/release/10.2/#id-1.11.6.26.5", "source_hash": "29cd6a1b45f1dbd0a9b378d952926967e029770361b7c32ebbe90dba404d4e82", "section_path": ["Changes"], "commit_groups": [["c6755e233", "ec7629dfb"]], "identity_text": "Avoid crash if parallel bitmap heap scan is unable to allocate a shared memory segment (Robert Haas)", "commit_aliases": ["c6755e233", "ec7629dfb"], "source_commits": ["ec7629dfb"], "source_entry_id": "10.2/changes/036", "db_id": "98e8c4f8b70fa43e47bab231ee1203eb", "patch_ids": ["2b984ca2e763ce591ba50864aba2ff0f"], "statement_hash": "cb1bcf66d9110ad5d77cdab58c13841d8b21a6a63f2773bbafaae8c2763abe75", "relations": [], "version": "10.2", "category_label": "Bug fixes", "also_in": [], "variants": [], "related_changes": []}, {"id": "10.2-04ba434270e4f9b4", "cves": [], "html": "Cope with failure to start a parallel worker process (Amit Kapila, Robert Haas)
\nParallel query previously tended to hang indefinitely if a worker could not be started, as the result of fork() failure or other low-probability problems.
Avoid unnecessary failure when no parallel workers can be obtained during parallel query startup (Robert Haas)
", "text": "Avoid unnecessary failure when no parallel workers can be obtained during parallel query startup (Robert Haas)", "title": "Avoid unnecessary failure when no parallel workers can be obtained during parallel query startup", "commits": [], "section": "Changes", "category": "improvement", "source_url": "/docs/release/10.2/#id-1.11.6.26.5", "source_hash": "163fe40c821385fb3d90e70e8747dfc951897539b35910e12cdc5fd05c37b807", "section_path": ["Changes"], "commit_groups": [["445dbd82a", "dba6e75c1"]], "identity_text": "Avoid unnecessary failure when no parallel workers can be obtained during parallel query startup (Robert Haas)", "commit_aliases": ["445dbd82a", "dba6e75c1"], "source_commits": ["dba6e75c1"], "source_entry_id": "10.2/changes/038", "db_id": "043a0aa3c32670da245d93acbdc53e93", "patch_ids": ["7fb49aa2383ebcbc97c392a32ce5deca"], "statement_hash": "2d29df54bcd1457e619a9661cdc1cea4f696e5c5522fc0634ff2dcef3981130b", "relations": [], "version": "10.2", "category_label": "Improvements", "also_in": [], "variants": [], "related_changes": []}, {"id": "10.2-a093b7201177cb46", "cves": [], "html": "Fix collection of EXPLAIN statistics from parallel workers (Amit Kapila, Thomas Munro)
Ensure that query strings passed to parallel workers are correctly null-terminated (Thomas Munro)
\nThis prevents emitting garbage in postmaster log output from such workers.
", "text": "Ensure that query strings passed to parallel workers are correctly null-terminated (Thomas Munro) This prevents emitting garbage in postmaster log output from such workers.", "title": "Ensure that query strings passed to parallel workers are correctly null-terminated", "commits": [], "section": "Changes", "category": "improvement", "source_url": "/docs/release/10.2/#id-1.11.6.26.5", "source_hash": "ff13828dac83593e9b4b03b1a87e248811477fc3ff4d22ec5273b3261d5a688e", "section_path": ["Changes"], "commit_groups": [["7be0d775a", "f94eec490"]], "identity_text": "Ensure that query strings passed to parallel workers are correctly null-terminated (Thomas Munro) This prevents emitting garbage in postmaster log output from such workers.", "commit_aliases": ["7be0d775a", "f94eec490"], "source_commits": ["7be0d775a"], "source_entry_id": "10.2/changes/040", "db_id": "8ef6d06e93359823ae84b86ad9ce7c39", "patch_ids": ["795c117b7e99a6d4587fef7c2a193057"], "statement_hash": "e9e204f860d7579eb98ebb7518959f7d6ed84cd3b8d7d620b42fd472f6d4befd", "relations": [], "version": "10.2", "category_label": "Improvements", "also_in": [], "variants": [], "related_changes": []}, {"id": "10.2-af50ff7adc2950f9", "cves": [], "html": "Avoid unsafe alignment assumptions when working with __int128 (Tom Lane)
Typically, compilers assume that __int128 variables are aligned on 16-byte boundaries, but our memory allocation infrastructure isn't prepared to guarantee that, and increasing the setting of MAXALIGN seems infeasible for multiple reasons. Adjust the code to allow use of __int128 only when we can tell the compiler to assume lesser alignment. The only known symptom of this problem so far is crashes in some parallel aggregation queries.
Prevent stack-overflow crashes when planning extremely deeply nested set operations (UNION/INTERSECT/EXCEPT) (Tom Lane)
Avoid crash during an EvalPlanQual recheck of an indexscan that is the inner child of a merge join (Tom Lane)
\nThis could only happen during an update or SELECT FOR UPDATE of a join, when there is a concurrent update of some selected row.
Fix crash in autovacuum when extended statistics are defined for a table but can't be computed (Álvaro Herrera)
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Prevent out-of-memory failures due to excessive growth of simple hash tables (Tomas Vondra, Andres Freund)
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These functions are stated to be Oracle® compatible, but they weren't exactly. In particular, there was a discrepancy in the interpretation of a negative third parameter: Oracle thinks that a negative value indicates the last place where the target substring can begin, whereas our functions took it as the last place where the target can end. Also, Oracle throws an error for a zero or negative fourth parameter, whereas our functions returned zero.
\nThe sample code has been adjusted to match Oracle's behavior more precisely. Users who have copied this code into their applications may wish to update their copies.
", "text": "Fix sample INSTR() functions in the PL/pgSQL documentation (Yugo Nagata, Tom Lane) These functions are stated to be Oracle® compatible, but they weren't exactly. In particular, there was a discrepancy in the interpretation of a negative third parameter: Oracle thinks that a negative value indicates the last place where the target substring can begin, whereas our functions took it as the last place where the target can end. Also, Oracle throws an error for a zero or negative fourth parameter, whereas our functions returned zero. The sample code has been adjusted to match Oracle's behavior more precisely. Users who have copied this code into their applications may wish to update their copies.", "title": "Fix sample INSTR() functions in the PL/pgSQL documentation", "commits": [], "section": "Changes", "category": "bugfix", "source_url": "/docs/release/10.2/#id-1.11.6.26.5", "source_hash": "d4bbede3164feaeba32871c5d867c6636654540e6e29df73a697b962fb9209b3", "section_path": ["Changes"], "commit_groups": [["08adf688f", "10bcd4165", "122605194", "3c1e9fd23", "45bfef7fb", "493cdc8ee"]], "identity_text": "Fix sample INSTR() functions in the PL/pgSQL documentation (Yugo Nagata, Tom Lane) These functions are stated to be Oracle compatible, but they weren't exactly. In particular, there was a discrepancy in the interpretation of a negative third parameter: Oracle thinks that a negative value indicates the last place where the target substring can begin, whereas our functions took it as the last place where the target can end. 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\nThe “tag” portion of an ACL archive entry was usually just the name of the associated object. Make it start with the object type instead, bringing ACLs into line with the convention already used for comment and security label archive entries. Also, fix the comment and security label entries for the whole database, if present, to make their tags start with DATABASE so that they also follow this convention. This prevents false matches in code that tries to identify large-object-related entries by seeing if the tag starts with LARGE OBJECT. That could have resulted in misclassifying entries as data rather than schema, with undesirable results in a schema-only or data-only dump.
Note that this change has user-visible results in the output of pg_restore --list.
Rename pg_rewind's copy_file_range function to avoid conflict with new Linux system call of that name (Andres Freund)
This change prevents build failures with newer glibc versions.
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Fix incorrect output from contrib/pageinspect's hash_page_items() function (Masahiko Sawada)
In contrib/postgres_fdw, avoid “outer pathkeys do not match mergeclauses” planner error when constructing a plan involving a remote join (Robert Haas)
In contrib/postgres_fdw, avoid planner failure when there are duplicate GROUP BY entries (Jeevan Chalke)
Provide modern examples of how to auto-start Postgres on macOS (Tom Lane)
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