Robert Joseph Evans created HDFS-12984:
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Summary: BlockPoolSlice can leak in a mini dfs cluster
Key: HDFS-12984
URL: https://issues.apache.org/jira/browse/HDFS-12984
Project: Hadoop HDFS
Issue Type: Bug
Affects Versions: 2.7.5
Reporter: Robert Joseph Evans
When running some unit tests for storm we found that we would occasionally get
out of memory errors on the HDFS integration tests.
When I got a heap dump I found that the ShutdownHookManager was full of
BlockPoolSlice$1 instances. Which hold a reference to the BlockPoolSlice which
then in turn holds a reference to the DataNode etc....
It looks like when shutdown is called on the BlockPoolSlice there is no way to
remove the shut down hook in because no reference to it is saved.
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