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From "Tom White (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-601) we need some rpc retry framework
Date Mon, 19 Feb 2007 20:05:05 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12474264
] 

Tom White commented on HADOOP-601:
----------------------------------

Thanks Johan. It would be good to add the annotations handling from your patch to the mechanism
in HADOOP-997. This is probably best done after HADOOP-997 is committed, as one of a series
of follow up Jiras to introduce retries in various parts of Hadoop. Note that if you use annotations
you can't get parameters from the configuration file (unless anyone knows of a way to do this?)

Also, I've put the retry classes in a new package org.apache.hadoop.io.retry. Do people feel
this is OK? It doesn't feel quite right as it's not exclusively for IO retries.

> we need some rpc retry framework
> --------------------------------
>
>                 Key: HADOOP-601
>                 URL: https://issues.apache.org/jira/browse/HADOOP-601
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: ipc
>    Affects Versions: 0.11.2
>            Reporter: Owen O'Malley
>         Assigned To: Owen O'Malley
>         Attachments: HADOOP-601-v1.patch, HADOOP-601-v1.patch
>
>
> We need some mechanism for RPC calls that get exceptions to automatically retry the call
under certain circumstances. In particular, we often end up with calls to rpcs being wrapped
with retry loops for timeouts. We should be able to make a retrying proxy that will call the
rpc and retry in some circumstances.

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