On Wed, Jun 13, 2018 at 10:22 PM, Alexander Korotkov
wrote:
> On Wed, Jun 13, 2018 at 11:40 AM Masahiko Sawada
> wrote:
>>
>> On Wed, Jun 13, 2018 at 3:32 PM, Peter Geoghegan wrote:
>> > On Tue, Jun 12, 2018 at 11:01 PM, Masahiko Sawada
>> > wrote:
>> >> FWIW, I've looked at this again. I thi
On Wed, Jun 13, 2018 at 11:40 AM Masahiko Sawada wrote:
>
> On Wed, Jun 13, 2018 at 3:32 PM, Peter Geoghegan wrote:
> > On Tue, Jun 12, 2018 at 11:01 PM, Masahiko Sawada
> > wrote:
> >> FWIW, I've looked at this again. I think that the situation Siva
> >> reported in the first mail can happen b
On Wed, Jun 13, 2018 at 3:32 PM, Peter Geoghegan wrote:
> On Tue, Jun 12, 2018 at 11:01 PM, Masahiko Sawada
> wrote:
>> FWIW, I've looked at this again. I think that the situation Siva
>> reported in the first mail can happen before we get commit 3b2787e.
>> That is, gin indexes had had a data c
On Tue, Jun 12, 2018 at 11:01 PM, Masahiko Sawada wrote:
> FWIW, I've looked at this again. I think that the situation Siva
> reported in the first mail can happen before we get commit 3b2787e.
> That is, gin indexes had had a data corruption bug. I've reproduced
> the situation with PostgreSQL 10
On Thu, Feb 22, 2018 at 10:26 AM, Masahiko Sawada wrote:
> On Thu, Feb 22, 2018 at 8:28 AM, Peter Geoghegan wrote:
>> On Wed, Feb 21, 2018 at 3:02 PM, R, Siva wrote:
>>> Did you mean pin on the metapage buffer during ginInsertCleanup and not lock
>>> during addition of tuples to the accumulator?
On Thu, Feb 22, 2018 at 8:28 AM, Peter Geoghegan wrote:
> On Wed, Feb 21, 2018 at 3:02 PM, R, Siva wrote:
>> Did you mean pin on the metapage buffer during ginInsertCleanup and not lock
>> during addition of tuples to the accumulator? The exclusive lock on metapage
>> buffer is released after rea
On Wed, Feb 21, 2018 at 3:02 PM, R, Siva wrote:
> Did you mean pin on the metapage buffer during ginInsertCleanup and not lock
> during addition of tuples to the accumulator? The exclusive lock on metapage
> buffer is released after reading/locking head of pending list and before we
> process page
On Wed, Feb 21, 2018 at 12:31 PM, Peter Geoghegan wrote:
> On Tue, Feb 20, 2018 at 7:19 PM, Masahiko Sawada
> wrote:
>> IIUC, ginInsertCleanup() holds ExclusiveLock on metapage during adding
>> tuples in the pending list to the accumulator. And inserting entries
>> to the pending list also requi
On Tue, Feb 20, 2018 at 7:19 PM, Masahiko Sawada wrote:
> IIUC, ginInsertCleanup() holds ExclusiveLock on metapage during adding
> tuples in the pending list to the accumulator. And inserting entries
> to the pending list also requires ExclusiveLock on metapage. This
> behavior is not relevant wit
On Wed, Feb 21, 2018 at 8:30 AM, R, Siva wrote:
> User backend (let us call this backend 1) has released the lock on the
> metapage and is processing the pending list pages, adding the items to the
> build accumulator. Let us assume that there are currently 2 pages in the
> pending list and metada
On Tue, Feb 20, 2018 at 3:30 PM, R, Siva wrote:
> We are currently investigating an issue with a Gin index containing
> duplicate item pointers for one of its keys. While we are trying to
> reproduce this issue, we wanted to reach out to the community to validate
> our current working theory.
Ple
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