Jason Lowe created YARN-4570:
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Summary: Nodemanager leaking RawLocalFilesystem instances for user
"testing"
Key: YARN-4570
URL: https://issues.apache.org/jira/browse/YARN-4570
Project: Hadoop YARN
Issue Type: Bug
Components: nodemanager
Affects Versions: 2.6.0
Reporter: Jason Lowe
I recently ran across a NodeManager that was running slowly due to excessive
GC. Digging into the heap I saw that most of the issue was leaked filesystem
statistics data objects which has been fixed in HADOOP-12107. However I also
noticed there were many thousands of RawLocalFilesystem objects on the heap,
far more than any other FileSystem type. Sampling a number of them showed that
they were for the "testing" user.
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