Allan Yang created HBASE-20611:
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Summary: UnsupportedOperationException may thrown when calling
getCallQueueInfo()
Key: HBASE-20611
URL: https://issues.apache.org/jira/browse/HBASE-20611
Project: HBase
Issue Type: Bug
Affects Versions: 2.0.0
Reporter: Allan Yang
HBASE-16290 added a new feature to dump queue info, the method
getCallQueueInfo() need to iterate the queue to get the elements in the queue.
But, except the Java's LinkedBlockingQueue, the other queue implementations
like BoundedPriorityBlockingQueue and AdaptiveLifoCoDelCallQueue don't
implement the method iterator(). If those queues are used, a
UnsupportedOperationException will be thrown.
This can be easily be reproduced by the UT testCallQueueInfo while adding a
conf ( conf.set("hbase.ipc.server.callqueue.type", "deadline");)
{code}
java.lang.UnsupportedOperationException
at
org.apache.hadoop.hbase.util.BoundedPriorityBlockingQueue.iterator(BoundedPriorityBlockingQueue.java:285)
at
org.apache.hadoop.hbase.ipc.RpcExecutor.getCallQueueCountsSummary(RpcExecutor.java:166)
at
org.apache.hadoop.hbase.ipc.SimpleRpcScheduler.getCallQueueInfo(SimpleRpcScheduler.java:241)
at
org.apache.hadoop.hbase.ipc.TestSimpleRpcScheduler.testCallQueueInfo(TestSimpleRpcScheduler.java:164)
{code}
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