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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15146) Don't block on Reader threads queueing to a scheduler queue
Date Thu, 28 Jan 2016 19:17:40 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15122140#comment-15122140
] 

Hudson commented on HBASE-15146:
--------------------------------

SUCCESS: Integrated in HBase-1.3-IT #466 (See [https://builds.apache.org/job/HBase-1.3-IT/466/])
HBASE-15146 Don't block on Reader threads queueing to a scheduler queue (eclark: rev 421fe24e9bb925e6199cc02118a5314458caeb38)
* hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/SimpleRpcScheduler.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RWQueueRpcExecutor.java
* hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncProcess.java
* hbase-client/src/main/java/org/apache/hadoop/hbase/exceptions/ClientExceptionsUtil.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestHCM.java
* hbase-client/src/test/java/org/apache/hadoop/hbase/client/TestAsyncProcess.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/BalancedQueueRpcExecutor.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RpcScheduler.java
* hbase-client/src/main/java/org/apache/hadoop/hbase/client/ConnectionManager.java
* hbase-client/src/test/java/org/apache/hadoop/hbase/exceptions/TestClientExceptionsUtil.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RpcExecutor.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RpcServer.java
* hbase-client/src/main/java/org/apache/hadoop/hbase/CallQueueTooBigException.java


> Don't block on Reader threads queueing to a scheduler queue
> -----------------------------------------------------------
>
>                 Key: HBASE-15146
>                 URL: https://issues.apache.org/jira/browse/HBASE-15146
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 1.2.0
>            Reporter: Elliott Clark
>            Assignee: Elliott Clark
>            Priority: Blocker
>             Fix For: 2.0.0, 1.2.0, 1.3.0
>
>         Attachments: HBASE-15146-v7.patch, HBASE-15146-v8.patch, HBASE-15146-v8.patch,
HBASE-15146.0.patch, HBASE-15146.1.patch, HBASE-15146.2.patch, HBASE-15146.3.patch, HBASE-15146.4.patch,
HBASE-15146.5.patch, HBASE-15146.6.patch
>
>
> Blocking on the epoll thread is awful. The new rpc scheduler can have lots of different
queues. Those queues have different capacity limits. Currently the dispatch method can block
trying to add the the blocking queue in any of the schedulers.
> This causes readers to block, tcp acks are delayed, and everything slows down.



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