Karen Coppage created HADOOP-17267:
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Summary: Add debug-level logs in Filesystem#close
Key: HADOOP-17267
URL: https://issues.apache.org/jira/browse/HADOOP-17267
Project: Hadoop Common
Issue Type: Improvement
Reporter: Karen Coppage
HDFS reuses the same cached FileSystem object across the file system. If the
client calls FileSystem.close(), closeAllForUgi(), or closeAll() (if it applies
to the instance) anywhere in the system it purges the cache of that FS
instance, and trying to use the instance results in an IOException: FileSystem
closed.
It would be a great help to clients to see where and when a given FS instance
was closed. I.e. in close(), closeAllForUgi(), or closeAll(), it would be great
to see a DEBUG-level log of
* calling method name, class, file name/line number
* FileSystem object's identity hash (FileSystem.close() only)
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