Hi All,

This patch is an add-on patch the version 15 posted earlier and
should be applied on top of version 15. The following review items
has been fixed:

- Fix the pruning code to prune all tuples upto and including the
latest DEAD tuple in the chain.

- Removed the heap tuple freezing changes because they are
no longer required because of changes to the pruning code

-  Removed the HeapTupleSatisfiesAbort() code. We now collect
all  DEAD heap-only tuples while scanning the page. A separate
bitmap is used to avoid duplicate entries in the deadtups array.
This is required because a DEAD HOT tuple may be scanned twice,
once while traversing the chain and then directly.

- A little improvement to the WAL logging in heap_page_prune_defrag().
Earlier we were logging two WAL records, now we do that only once

- The autoanalyze code now treats redirect dead line pointers as dead


Pavan Deolasee
EnterpriseDB     http://www.enterprisedb.com

Attachment: HOT-v15-16.patch.gz
Description: GNU Zip compressed data

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