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https://issues.apache.org/jira/browse/HDFS-611?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12792372#action_12792372
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Yajun Dong commented on HDFS-611:
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hi, all, Heartbeats times from Datanodes will also increase when there are
plenty of blocks to report.
partial Datanode log of Hadoop-0.19.2:
2009-12-18 01:45:19,434 INFO org.apache.hadoop.hdfs.server.datanode.DataNode:
BlockReport of 67275 blocks got processed in 862837 msecs
> Heartbeats times from Datanodes increase when there are plenty of blocks to
> delete
> ----------------------------------------------------------------------------------
>
> Key: HDFS-611
> URL: https://issues.apache.org/jira/browse/HDFS-611
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: data-node
> Affects Versions: 0.20.1, 0.21.0, 0.22.0
> Reporter: dhruba borthakur
> Assignee: Zheng Shao
> Fix For: 0.22.0
>
> Attachments: HDFS-611.branch-19.patch, HDFS-611.branch-19.v2.patch,
> HDFS-611.branch-20.patch, HDFS-611.branch-20.v2.patch,
> HDFS-611.branch-20.v6.patch, HDFS-611.trunk.patch, HDFS-611.trunk.v2.patch,
> HDFS-611.trunk.v3.patch, HDFS-611.trunk.v4.patch, HDFS-611.trunk.v5.patch,
> HDFS-611.trunk.v6.patch
>
>
> I am seeing that when we delete a large directory that has plenty of blocks,
> the heartbeat times from datanodes increase significantly from the normal
> value of 3 seconds to as large as 50 seconds or so. The heartbeat thread in
> the Datanode deletes a bunch of blocks sequentially, this causes the
> heartbeat times to increase.
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