Horton

Re: Parallel bitmap heap scan

tushar <tushar.ahuja@enterprisedb.com>

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From: tushar <tushar.ahuja@enterprisedb.com>
To: Dilip Kumar <dilipbalaut@gmail.com>
Cc: Amit Khandekar <amitdkhan.pg@gmail.com>, Amit Kapila <amit.kapila16@gmail.com>, Andres Freund <andres@anarazel.de>, Robert Haas <robertmhaas@gmail.com>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2017-01-10T05:59:04Z
Lists: pgsql-hackers 
On 01/09/2017 07:22 PM, Dilip Kumar wrote:
> Thanks, Tushar. I have fixed it. The defect was in 0002. I have also
> observed another issue related to code refactoring, Actually, there
> was some code present in 0001 which supposed to be in 0003.
Thanks, I have checked at my end and it is fixed now.

-- 
regards,tushar
EnterpriseDB  https://www.enterprisedb.com/
The Enterprise PostgreSQL Company

Commits

  1. Pass DSA_ALLOC_HUGE when allocating a shared TIDBitmap.

  2. Support parallel bitmap heap scans.

  3. tidbitmap: Support shared iteration.

  4. Shut down Gather's children before shutting down Gather itself.

  5. Revise the way the element allocator for a simplehash is specified.

  6. Refactor bitmap heap scan estimation of heap pages fetched.

  7. Use more efficient hashtable for tidbitmap.c to speed up bitmap scans.