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https://issues.apache.org/jira/browse/HBASE-15146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15121674#comment-15121674
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Hudson commented on HBASE-15146:
--------------------------------
FAILURE: Integrated in HBase-Trunk_matrix #664 (See
[https://builds.apache.org/job/HBase-Trunk_matrix/664/])
HBASE-15146 Don't block on Reader threads queueing to a scheduler queue
(eclark: rev 138b754671d51d3f494adc250ab0cb9e085c858a)
* hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RWQueueRpcExecutor.java
*
hbase-client/src/test/java/org/apache/hadoop/hbase/exceptions/TestClientExceptionsUtil.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/ConnectionImplementation.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-client/src/main/java/org/apache/hadoop/hbase/CallQueueTooBigException.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.java
*
hbase-client/src/test/java/org/apache/hadoop/hbase/client/TestAsyncProcess.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RpcExecutor.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RpcServer.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/SimpleRpcScheduler.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestHCM.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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