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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4185) Add a metric for number of active leases
Date Mon, 18 May 2015 19:48:03 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4185?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14548633#comment-14548633
] 

Hudson commented on HDFS-4185:
------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #7855 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/7855/])
HDFS-4185. Add a metric for number of active leases (Rakesh R via raviprak) (raviprak: rev
cdfae446ad285db979a79bf55665363fd943702c)
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/metrics/TestNameNodeMetrics.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/LeaseManager.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java


> Add a metric for number of active leases
> ----------------------------------------
>
>                 Key: HDFS-4185
>                 URL: https://issues.apache.org/jira/browse/HDFS-4185
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions: 0.23.4, 2.0.2-alpha
>            Reporter: Kihwal Lee
>            Assignee: Rakesh R
>              Labels: BB2015-05-TBR
>             Fix For: 2.8.0
>
>         Attachments: HDFS-4185-001.patch, HDFS-4185-002.patch, HDFS-4185-003.patch, HDFS-4185-004.patch,
HDFS-4185-005.patch, HDFS-4185-006.patch, HDFS-4185-007.patch, HDFS-4185-008.patch, HDFS-4185-009.patch
>
>
> We have seen cases of systematic open file leaks, which could have been detected if we
have a metric that shows number of active leases.



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