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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-2662) Export a metric for txn log sync times
Date Fri, 28 Apr 2017 05:37:04 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2662?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15988245#comment-15988245
] 

Hudson commented on ZOOKEEPER-2662:
-----------------------------------

SUCCESS: Integrated in Jenkins build ZooKeeper-trunk #3370 (See [https://builds.apache.org/job/ZooKeeper-trunk/3370/])
ZOOKEEPER-2662: Export a metric for txn log sync times (hanm: rev 425fdbb8fa64ea839072701187fa7a24bfe10bda)
* (edit) src/java/main/org/apache/zookeeper/server/persistence/FileTxnSnapLog.java
* (edit) src/java/main/org/apache/zookeeper/server/ZooKeeperServer.java
* (edit) src/java/main/org/apache/zookeeper/server/ZooKeeperServerMXBean.java
* (edit) src/java/main/org/apache/zookeeper/server/ZooKeeperServerBean.java
* (edit) src/java/main/org/apache/zookeeper/server/persistence/TxnLog.java
* (edit) src/java/test/org/apache/zookeeper/server/ZooKeeperServerBeanTest.java
* (edit) src/java/test/org/apache/zookeeper/server/persistence/FileTxnSnapLogTest.java
* (edit) src/java/main/org/apache/zookeeper/server/persistence/FileTxnLog.java


> Export a metric for txn log sync times
> --------------------------------------
>
>                 Key: ZOOKEEPER-2662
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2662
>             Project: ZooKeeper
>          Issue Type: Improvement
>            Reporter: Andrew Purtell
>            Assignee: Edward Ribeiro
>             Fix For: 3.6.0
>
>         Attachments: ZOOKEEPER-2662.diff
>
>
> In FileTxnLog there is code that records the amount of time required to fsync the txn
log in order to warn if that time exceeds a configurable threshold. This information should
also be exported as a metric available by JMX so an important aspect of quorum performance
can be monitored. 
> ZooKeeperServerMXBean carries some global latency information for the server process
already, seems like a good place to put it if not an entirely new bean for the TxnLog. After
ZOOKEEPER-2310 might want to collect the same information for snapshots. 



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