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https://issues.apache.org/jira/browse/HDFS-16838?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tao Li reopened HDFS-16838:
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> Fix NPE in testAddRplicaProcessorForAddingReplicaInMap
> ------------------------------------------------------
>
> Key: HDFS-16838
> URL: https://issues.apache.org/jira/browse/HDFS-16838
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: ZanderXu
> Assignee: ZanderXu
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.3.9
>
>
> There is a NPE in
> org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.TestFsVolumeList#testAddRplicaProcessorForAddingReplicaInMap
> if we run this UT individually. And the related bug as bellow:
>
> {code:java}
> public void testAddRplicaProcessorForAddingReplicaInMap() throws Exception {
> // BUG here
> BlockPoolSlice.reInitializeAddReplicaThreadPool();
> Configuration cnf = new Configuration();
> int poolSize = 5;
> ...
> }{code}
>
> _addReplicaThreadPool_ may not have been initialized and is null, if we run
> testAddRplicaProcessorForAddingReplicaInMap unit test as an individual unit
> test.
> {code:java}
> @VisibleForTesting
> public static void reInitializeAddReplicaThreadPool() {
> addReplicaThreadPool.shutdown();
> addReplicaThreadPool = null;
> }{code}
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