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From "Matt Foley (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-1808) TestBalancer waits forever, errs without giving information
Date Thu, 21 Apr 2011 00:01:11 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1808?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matt Foley updated HDFS-1808:
-----------------------------

    Attachment: 1808_TestBalancer_v4.patch

Incorporated Eli's suggestions.

I do plan to commit this separately, in fact I broke the link from HDFS-1295 for all the unit
test modules except TestDatanodeBlockScanner which is directly related to it.

> TestBalancer waits forever, errs without giving information
> -----------------------------------------------------------
>
>                 Key: HDFS-1808
>                 URL: https://issues.apache.org/jira/browse/HDFS-1808
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node, name-node
>    Affects Versions: 0.22.0
>            Reporter: Matt Foley
>            Assignee: Matt Foley
>             Fix For: 0.23.0
>
>         Attachments: 1808_TestBalancer_v3.patch, 1808_TestBalancer_v4.patch, TestBalancer.java.patch
>
>
> In three locations in the code, TestBalancer waits forever on a condition.  Failures
result in Hudson/Jenkins "Timeout occurred" error message with no information about where
or why.  Need to replace with TimeoutExceptions that throw a stack trace and useful info about
the failure mode.
> In waitForHeartBeat(), it is waiting on an exact match for a value that may be coarsely
quantized -- i.e., significant deviation from the exact "expected" result may occur.  Replace
with an allowed range of result.

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