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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4795) Lease monitor may get into an infinite loop
Date Mon, 08 Dec 2008 22:29:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4795?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12654608#action_12654608
] 

Konstantin Shvachko commented on HADOOP-4795:
---------------------------------------------

# I would rename Monitor.check() to something like checkLeases().
# {{esle}} statement can be removed.
# Wrapping String Collection into {{ArrayList}} can be replaced by collecting paths to be
removed in an {{ArrayList}} and then removing them afterwards in a separate loop. This will
be much less copying.

> Lease monitor may get into an infinite loop
> -------------------------------------------
>
>                 Key: HADOOP-4795
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4795
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>            Reporter: Tsz Wo (Nicholas), SZE
>            Priority: Blocker
>             Fix For: 0.18.3
>
>         Attachments: 4795_20081205.patch, 4795_20081208.patch
>
>
> If a lease is not found in the namespace for some reasons (e.g. bugs), lease monitor
may get into an infinite loop.

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