Optimize alignment calculations in tuple form/deform
Here we convert CompactAttribute.attalign from a char, which is directly
derived from pg_attribute.attalign into a uint8, which stores the number
of bytes to align the column's value by in the tuple.
This allows tuple deformation and tuple size
Mark CatalogSnapshotData static
Like CurrentSnapshotData, it should not be accessed directly outside
snapmgr.c.
Branch
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master
Details
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https://git.postgresql.org/pg/commitdiff/1f81b48a9d567ae9074ab1f3233eae9997b3d7bd
Modified Files
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src/backend/utils/time/snapmgr.c |
Fix variable reference in comment
This used to say "nsubxcnt isn't decreased when subtransactions
abort", but there's no variable called nsubxcnt. Commit 8548ddc61b
changed it to "subxcnt", among other typo fixes, but that was wrong
too: the comment actually talks about txn->nsubtxns. That's the f
Fix overflow danger in SampleHeapTupleVisible(), take 2
28328ec87b45725 addressed one overflow danger in
SampleHeapTupleVisible() but introduced another, albeit a less likely
one. Modify the binary search code to remove this danger.
Reported-by: Richard Guo
Reviewed-by: Richard Guo, Ranier Vilela
Fix corruption when relation truncation fails.
RelationTruncate() does three things, while holding an
AccessExclusiveLock and preventing checkpoints:
1. Logs the truncation.
2. Drops buffers, even if they're dirty.
3. Truncates some number of files.
Step 2 could previously be canceled if it had
Fix corruption when relation truncation fails.
RelationTruncate() does three things, while holding an
AccessExclusiveLock and preventing checkpoints:
1. Logs the truncation.
2. Drops buffers, even if they're dirty.
3. Truncates some number of files.
Step 2 could previously be canceled if it had
Fix corruption when relation truncation fails.
RelationTruncate() does three things, while holding an
AccessExclusiveLock and preventing checkpoints:
1. Logs the truncation.
2. Drops buffers, even if they're dirty.
3. Truncates some number of files.
Step 2 could previously be canceled if it had
Fix corruption when relation truncation fails.
RelationTruncate() does three things, while holding an
AccessExclusiveLock and preventing checkpoints:
1. Logs the truncation.
2. Drops buffers, even if they're dirty.
3. Truncates some number of files.
Step 2 could previously be canceled if it had
Fix corruption when relation truncation fails.
RelationTruncate() does three things, while holding an
AccessExclusiveLock and preventing checkpoints:
1. Logs the truncation.
2. Drops buffers, even if they're dirty.
3. Truncates some number of files.
Step 2 could previously be canceled if it had
Fix corruption when relation truncation fails.
RelationTruncate() does three things, while holding an
AccessExclusiveLock and preventing checkpoints:
1. Logs the truncation.
2. Drops buffers, even if they're dirty.
3. Truncates some number of files.
Step 2 could previously be canceled if it had
Remove pg_attribute.attcacheoff column
The column is no longer needed as the offset is now cached in the
CompactAttribute struct per commit 5983a4cff.
Author: David Rowley
Reviewed-by: Andres Freund, Victor Yegorov
Discussion:
https://postgr.es/m/CAApHDvrBztXP3yx=NKNmo3xwFAFhEdyPnvrDg3=m0rhds+4.
Relax regression test for fsync check of backend-level stats
One test added in 9aea73fc61d4 did not take into account that the
backend may have some fsync even after a checkpoint. Let's relax it to
be more flexible.
Per report from buildfarm member grassquit, via Alexander Lakhin.
Author: Bertr
Introduce CompactAttribute array in TupleDesc, take 2
The new compact_attrs array stores a few select fields from
FormData_pg_attribute in a more compact way, using only 16 bytes per
column instead of the 104 bytes that FormData_pg_attribute uses. Using
CompactAttribute allows performance-critica
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