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From "Tsuyoshi OZAWA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5167) Add metrics about the NameNode retry cache
Date Wed, 26 Feb 2014 00:08:22 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13912292#comment-13912292

Tsuyoshi OZAWA commented on HDFS-5167:

[~jingzhao], I found that HATestUtil#setFailoverConfigurations() sets ConfiguredFailoverProxyProvider.class
with configKey "dfs.client.failover.proxy.provider.ha-nn-uri-0" but NameNodeProxies#getFailoverProxyProviderClass()
trys to read class name with configKey "dfs.client.failover.proxy.provider.localhost". This
is the reason why we cannot use LossyRetryInvocationHandler only by calling HATestUtil#setFailoverConfigurations().
I try to fix it. Please let me know if you have additional advice.

> Add metrics about the NameNode retry cache
> ------------------------------------------
>                 Key: HDFS-5167
>                 URL: https://issues.apache.org/jira/browse/HDFS-5167
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, namenode
>    Affects Versions: 3.0.0, 2.3.0, 2.4.0
>            Reporter: Jing Zhao
>            Assignee: Tsuyoshi OZAWA
>            Priority: Minor
>         Attachments: HDFS-5167.1.patch, HDFS-5167.10.patch, HDFS-5167.2.patch, HDFS-5167.3.patch,
HDFS-5167.4.patch, HDFS-5167.5.patch, HDFS-5167.6.patch, HDFS-5167.6.patch, HDFS-5167.7.patch,
HDFS-5167.8.patch, HDFS-5167.9-2.patch, HDFS-5167.9.patch
> It will be helpful to have metrics in NameNode about the retry cache, such as the retry
count etc.

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