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Ajay Kumar commented on HDFS-12984: ----------------------------------- [~revans2],[~arpitagarwal] thanks for review. test failures are unrelated. both of them passed locally. > 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 > Assignee: Ajay Kumar > Attachments: HDFS-12984.001.patch, Screen Shot 2018-01-05 at 4.38.06 > PM.png, Screen Shot 2018-01-05 at 5.26.54 PM.png, Screen Shot 2018-01-05 at > 5.31.52 PM.png > > > 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. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org