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From "Zach York (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-19435) Reopen Files for ClosedChannelException in BucketCache
Date Tue, 05 Dec 2017 23:34:00 GMT
Zach York created HBASE-19435:
---------------------------------

             Summary: Reopen Files for ClosedChannelException in BucketCache
                 Key: HBASE-19435
                 URL: https://issues.apache.org/jira/browse/HBASE-19435
             Project: HBase
          Issue Type: Bug
          Components: BucketCache
    Affects Versions: 1.3.1, 2.0.0
            Reporter: Zach York
            Assignee: Zach York


When using the FileIOEngine for BucketCache, the cache will be disabled if the connection
is interrupted or closed. HBase will then get ClosedChannelExceptions trying to access the
file. After 60s, the RS will disable the cache. This causes severe read performance degradation
for workloads that rely on this cache. FileIOEngine never tries to reopen the connection.
This JIRA is to reopen files when the BucketCache encounters a ClosedChannelException.



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