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Posted to dev@lucene.apache.org by "Ishan Chattopadhyaya (Jira)" <ji...@apache.org> on 2019/08/26 10:51:00 UTC
[jira] [Commented] (SOLR-13718) SPLITSHARD using async can cause
data loss
[ https://issues.apache.org/jira/browse/SOLR-13718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16915697#comment-16915697 ]
Ishan Chattopadhyaya commented on SOLR-13718:
---------------------------------------------
This is a spin off from SOLR-13695. THe last comment there describes how I discovered this bug.
> SPLITSHARD using async can cause data loss
> ------------------------------------------
>
> Key: SOLR-13718
> URL: https://issues.apache.org/jira/browse/SOLR-13718
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Affects Versions: 7.7.2
> Reporter: Ishan Chattopadhyaya
> Assignee: Ishan Chattopadhyaya
> Priority: Major
>
> When using SPLITSHARD with async, if there are underlying failures in the SPLIT core command or other sub-commands of SPLITSHARD, then SPLITSHARD succeeds and results in two empty sub-shards.
> There are various potential failures with SPLIT core command, here's a way to reproduce using a Solr 6x index in Solr 7x.
> Steps to reproduce (in Solr 7x):
> {code}
> 1. Import the attached configset, and create a collection.
> 2. Move in the attached data directory (index created in Solr6x) in place of the created collection's data directory. Do a collection RELOAD.
> 3. Issue a *:* query, we see 5 documents.
> 4. Issue a SPLITSHARD, and then issue *:*, we see 0 documents.
> {code}
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