[SOLR-11182] Solr doesn't log IOException if a shard split fails

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 6.5, 6.6
• Fix Version/s: 7.0
• Security Level: Public (Default Security Level. Issues are Public)
• Assignee: Varun Thacker
• Reporter: Varun Thacker
• Created: 02/Aug/17 23:42
• Updated: 03/Aug/17 17:30
• Resolved: 03/Aug/17 17:30

Description

During a split shard operation the last message I see in the Solr logs was this

date time INFO  (parallelCoreAdminExecutor... SPLIT) [   ] o.a.s.u.SolrIndexWriter Calling setCommitData with IW:org.apache.solr.update.SolrIndexWriter@hex

But the split never completed according the the request status API.

...
  "Operation splitshard caused exception:": "org.apache.solr.common.SolrException:org.apache.solr.common.SolrException",
  "exception": {
    "msg": null,
    "rspCode": 500
  }

SolrIndexSplitter#split throws an IOException and in DirectUpdateHandler2#split we catch it but never log an exception. We should log the error and also throw it ?