[jira] [Created] (HBASE-18786) FileNotFoundException should not be silently handled for primary region replicas

["Ashu Pachauri (JIRA)" <ji...@apache.org>]

Ashu Pachauri created HBASE-18786:
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             Summary: FileNotFoundException should not be silently handled for primary region replicas
                 Key: HBASE-18786
                 URL: https://issues.apache.org/jira/browse/HBASE-18786
             Project: HBase
          Issue Type: Sub-task
            Reporter: Ashu Pachauri


This is a follow up for HBASE-18186.
FileNotFoundException while scanning from a primary region replica can be indicative of a more severe problem. Handling them silently can cause many underlying issues go undetected. We should either
1. Hard fail the regionserver if there is a FNFE on a primary region replica, OR
2. Report these exceptions as some region / server level metric so that these can be proactively investigated.



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