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https://issues.apache.org/jira/browse/HADOOP-2755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12564544#action_12564544
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Christian Kunz commented on HADOOP-2755:
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This is a 1300 active node cluster with blockreports every hour each (they
seem to take a couple of seconds each) and heartbeat interval every minute.
This configuration did not change, but did anything change lately regarding
heartbeat / blockreport?
> dfs fsck extremely slow, dfs ls times out
> -----------------------------------------
>
> Key: HADOOP-2755
> URL: https://issues.apache.org/jira/browse/HADOOP-2755
> Project: Hadoop Core
> Issue Type: Bug
> Affects Versions: 0.16.0
> Environment: Jan 28 nightly build
> With patches 2095, 2119, and 2723
> Reporter: Christian Kunz
> Assignee: dhruba borthakur
> Priority: Blocker
> Fix For: 0.16.0
>
>
> I upgraded a Hadoop installation to the Jan 28 nightly build.
> DFS contains 2.4+ M files.
> Upgrade finished but not finalized.
> Before finalizing I wanted to run fsck on the DFS. It hardly progressed after
> 6 hours (not finished yet). With the '-files' option turned on, it lists
> about 300 entries in 10 minutes.
> And when I tried to list a subdirectory with 100,000 files, it repeatedly
> (about 20 attempts) timed out.
> Changing timeout from 1 to 10 minutes did not help.
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