[jira] [Commented] (SOLR-16473) Race condition in shard split when a sub-shard is put in recovery state

["ASF subversion and git services (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-16473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17643460#comment-17643460 ] 

ASF subversion and git services commented on SOLR-16473:
--------------------------------------------------------

Commit 4519c1fcb050c4b2bbcb21e3c2583455fbfdb3a2 in solr's branch refs/heads/main from Bruno Roustant
[ https://gitbox.apache.org/repos/asf?p=solr.git;h=4519c1fcb05 ]

SOLR-16473: Fix race condition in shard split when a sub-shard is put in recovery state.

Co-authored-by: Andy Vuong <a....@salesforce.com>

> Race condition in shard split when a sub-shard is put in recovery state
> -----------------------------------------------------------------------
>
>                 Key: SOLR-16473
>                 URL: https://issues.apache.org/jira/browse/SOLR-16473
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Bruno Roustant
>            Assignee: Bruno Roustant
>            Priority: Major
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> There is a race condition in shard splits code when a sub-shard is put in RECOVERY state and the remaining replicas are added. The problem is that the code does not wait to ensure the sub-shard state is indeed changed to RECOVERY.
> [~andyvuong] reproduced the bug by adding some artificial delay, and this race condition seems to be the root cause of indexing holes.
> The fix is to wait for the RECOVERY state.



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