Cached FileSystem can lead to persistant IOExceptions
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Key: HIVE-1322
URL: https://issues.apache.org/jira/browse/HIVE-1322
Project: Hadoop Hive
Issue Type: Bug
Components: Metastore
Reporter: Paul Yang
Assignee: Paul Yang
Priority: Minor
Fix For: 0.6.0
In the metastore, the FileSystem object is created through Path.getFileSytem(),
which caches the created instance for performance. For DFS, the cached
FileSystem seems to retain the original IP (resolved from the supplied
hostname). If the hostname->IP mapping changes, then FS operations will throw
IOExceptions. Because the FileSystem is cached, re-creating the object has no
effect and will continue to result in IOExceptions.
One solution is to call close on an IOException. That will remove the entry in
the cache.
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