> I've assigned to review this patch.
> At first, I'd like to notice that I like idea and general design.
> Secondly, patch set don't apply cleanly to master. Please, rebase it.
Thanks for showing your interest towards this patch. I would like to
inform that this patch has got dependency on patch for 'Write Ahead
Logging in hash index - ' and 'Microvacuum support in hash index
'. Hence, until above two patches becomes stable I may have to keep
on rebasing this patch. However, I will try to share you the updated
> On Tue, Feb 14, 2017 at 8:27 AM, Ashutosh Sharma <ashu.coe...@gmail.com>
>> 1) 0001-Rewrite-hash-index-scans-to-work-a-page-at-a-time.patch: this
>> patch rewrites the hash index scan module to work in page-at-a-time
>> mode. It basically introduces two new functions-- _hash_readpage() and
>> _hash_saveitem(). The former is used to load all the qualifying tuples
>> from a target bucket or overflow page into an items array. The latter
>> one is used by _hash_readpage to save all the qualifying tuples found
>> in a page into an items array. Apart from that, this patch bascially
>> cleans _hash_first(), _hash_next and hashgettuple().
> I see that forward and backward scan cases of function _hash_readpage contain
> a lot of code duplication
> Could you please refactor this function to have less code duplication?
Sure, I will try to avoid the code duplication as much as possible.
> Also, I wonder if you have a special idea behind inserting data in test.sql
> by 1002 separate SQL statements.
> INSERT INTO con_hash_index_table (keycol) SELECT a FROM GENERATE_SERIES(1,
> 1000) a;
> You can achieve the same result by execution of single SQL statement.
> INSERT INTO con_hash_index_table (keycol) SELECT (a - 1) % 1000 + 1 FROM
> GENERATE_SERIES(1, 1002000) a;
> Unless you have some special idea of doing this in 1002 separate transactions.
There is no reason for having so many INSERT statements in test.sql
file. I think it would be better to replace it with single SQL
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