[jira] [Updated] (HBASE-20611) UnsupportedOperationException may thrown when calling getCallQueueInfo()

["Xu Cang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-20611?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xu Cang updated HBASE-20611:
----------------------------
    Attachment: HBASE-20611.master.001.patch
        Status: Patch Available  (was: Open)

> 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
>            Assignee: Xu Cang
>            Priority: Major
>         Attachments: HBASE-20611.master.001.patch
>
>
> 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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