Ishan Chattopadhyaya created SOLR-13718:
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Summary: 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
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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