Re: Write Ahead Logging for Hash Indexes

On Fri, Feb 10, 2017 at 12:15 PM, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
> On Thu, Feb 9, 2017 at 10:28 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>
>> The things that look like preliminary refactoring to
>> me are:
>>
>> - Adding _hash_pgaddmultitup and using it in various places.
>> - Adding and freeing overflow pages has been extensively reworked.
>>
>
> Freeing the overflow page is too tightly coupled with changes related
> to _hash_pgaddmultitup, so it might be better to keep it along with
> it. However, I think we can prepare a separate patch for changes
> related to adding the overflow page.
>
>> - Similarly, there is some refactoring of how bitmap pages get initialized.
>> - Index initialization has been rejiggered significantly.
>> - Bucket splits have been rejiggered.
>>
>

As discussed, attached are refactoring patches and a patch to enable
WAL for the hash index on top of them.

--
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com