HDFS Federation: MiniDFSCluster#waitActive() bug causes some tests to fail
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Key: HDFS-1718
URL: https://issues.apache.org/jira/browse/HDFS-1718
Project: Hadoop HDFS
Issue Type: Sub-task
Components: test
Affects Versions: Federation Branch
Reporter: Suresh Srinivas
Assignee: Suresh Srinivas
Fix For: Federation Branch
MiniDFSCluster#shouldWait() method waits for all the datanodes to come up and
register with the namenode.
Due to threading issues some of the tests fail for two reasons:
# Datanode#isDatanodeUp() fails even if all the BPOfferService threads have
exited. This is due to Thread.isAlive()
returning true, even though the thread has exited. Adding a check to
BPOfferService#shouldService run as an addition,
fixes this issues.
# shouldWait(), where isBPServiceAlive() is called, does not work when a
BPOfferService thread fails before the
datanode has discovered the BPID, from handshake with namenode. This can be
fixed by checking the thread state using
InetSocketAddress to determine the BPOfferService, instead of BPID.
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