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https://issues.apache.org/jira/browse/SOLR-13718?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ishan Chattopadhyaya updated SOLR-13718:
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Description:
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}
Check
was:
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}
> 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, 8.1, 8.2
> Reporter: Ishan Chattopadhyaya
> Assignee: Ishan Chattopadhyaya
> Priority: Major
> Fix For: 7.7.3, 8.3
>
> Attachments: SOLR-13718.patch, solr-13718-reproduce.sh, solr.zip
>
>
> 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}
> Check
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