3 Commits (1664ae1978bf0f5ee940dc2fc8313e6400a7e7da)

Author	SHA1	Message	Date
Andres Freund	7f563c09f8	Add amcheck verification of heap relations belonging to btree indexes. ... Add a new, optional, capability to bt_index_check() and bt_index_parent_check(): check that each heap tuple that should have an index entry does in fact have one. The extra checking is performed at the end of the existing nbtree checks. This is implemented by using a Bloom filter data structure. The implementation performs set membership tests within a callback (the same type of callback that each index AM registers for CREATE INDEX). The Bloom filter is populated during the initial index verification scan. Reusing the CREATE INDEX infrastructure allows the new verification option to automatically benefit from the heap consistency checks that CREATE INDEX already performs. CREATE INDEX does thorough sanity checking of HOT chains, so the new check actually manages to detect problems in heap-only tuples. Author: Peter Geoghegan Reviewed-By: Pavan Deolasee, Andres Freund Discussion: https://postgr.es/m/CAH2-Wzm5VmG7cu1N-H=nnS57wZThoSDQU+F5dewx3o84M+jY=g@mail.gmail.com	8 years ago
Andres Freund	7150402655	amcheck: Harden tests against concurrent autovacuums. ... The previous coding of the test was vulnerable against autovacuum triggering work on one of the tables in check_btree.sql. For the purpose of the test it's entirely sufficient to check for locks taken by the current process, so add an appropriate restriction. While touching the test, expand it to also check for locks on the underlying relations, rather than just the indexes. Reported-By: Tom Lane Discussion: https://postgr.es/m/30354.1489434301@sss.pgh.pa.us	9 years ago
Andres Freund	3717dc149e	Add amcheck extension to contrib. ... This is the beginning of a collection of SQL-callable functions to verify the integrity of data files. For now it only contains code to verify B-Tree indexes. This adds two SQL-callable functions, validating B-Tree consistency to a varying degree. Check the, extensive, docs for details. The goal is to later extend the coverage of the module to further access methods, possibly including the heap. Once checks for additional access methods exist, we'll likely add some "dispatch" functions that cover multiple access methods. Author: Peter Geoghegan, editorialized by Andres Freund Reviewed-By: Andres Freund, Tomas Vondra, Thomas Munro, Anastasia Lubennikova, Robert Haas, Amit Langote Discussion: CAM3SWZQzLMhMwmBqjzK+pRKXrNUZ4w90wYMUWfkeV8mZ3Debvw@mail.gmail.com	9 years ago