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Posted to issues@hbase.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2014/05/16 13:04:42 UTC
[jira] [Commented] (HBASE-10212) New rpc metric: number of active
handler
[ https://issues.apache.org/jira/browse/HBASE-10212?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13999363#comment-13999363 ]
Hudson commented on HBASE-10212:
--------------------------------
ABORTED: Integrated in HBase-TRUNK #5132 (See [https://builds.apache.org/job/HBase-TRUNK/5132/])
Amend HBASE-10561 Forward port: HBASE-10212 New rpc metric: number of active handler (liangxie: rev 1594126)
* /hbase/trunk/hbase-hadoop-compat/src/main/java/org/apache/hadoop/hbase/ipc/MetricsHBaseServerSource.java
* /hbase/trunk/hbase-hadoop2-compat/src/main/java/org/apache/hadoop/hbase/ipc/MetricsHBaseServerSourceImpl.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/SimpleRpcScheduler.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/ipc/MetricsHBaseServerWrapperStub.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/ipc/TestRpcMetrics.java
HBASE-10561 Forward port: HBASE-10212 New rpc metric: number of active handler (liangxie: rev 1594117)
* /hbase/trunk/hbase-hadoop-compat/src/main/java/org/apache/hadoop/hbase/ipc/MetricsHBaseServerWrapper.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/MetricsHBaseServerWrapperImpl.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RpcScheduler.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/SimpleRpcScheduler.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/ipc/MetricsHBaseServerWrapperStub.java
> New rpc metric: number of active handler
> ----------------------------------------
>
> Key: HBASE-10212
> URL: https://issues.apache.org/jira/browse/HBASE-10212
> Project: HBase
> Issue Type: Improvement
> Components: IPC/RPC
> Reporter: Chao Shi
> Assignee: Chao Shi
> Fix For: 0.94.17
>
> Attachments: hbase-10212.patch
>
>
> The attached patch adds a new metric: number of active handler threads. We found this is a good metric to measure how busy of a server. If this number is too high (compared to the total number of handlers), the server has risks in getting call queue full.
> We used to monitor # reads or # writes. However we found this often produce false alerts, because a read touching HDFS will produce much high workload than a block-cached read.
> The attached patch is based on our internal 0.94 branch, but I think it pretty easy to port to rebase to other branches if you think it is useful.
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