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Posted to hdfs-issues@hadoop.apache.org by "Amithsha (JIRA)" <ji...@apache.org> on 2019/02/10 08:44:00 UTC
[jira] [Updated] (HDFS-14264) Datanode du -sk command is slow
[ https://issues.apache.org/jira/browse/HDFS-14264?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Amithsha updated HDFS-14264:
----------------------------
Description:
Datanode consuming more time on du -sk command as well as creating heavy IO on disk. In our prod systems, each disk of dfs usage is 3Tb, to caculate it, the datanode will spend 10-20min Avg time. Also nodemanagers are running on the same box during this du -sk operation could see heavy IO on disk.
Datanode should cache the usage and also not to be cleared by any other process.
was:
Datanode consuming more time on du -sk command as well as creating heavy IO on disk. In our prod systems, each disk of dfs usage is 3Tb, to caculate it, the datanode will spend 10-20min Avg time. Also nodemanagers are running on the same box during this du -sk operation could see heavy IO on disk.
Datanode should cache the usage and also not be cleared by any other process.
> Datanode du -sk command is slow
> -------------------------------
>
> Key: HDFS-14264
> URL: https://issues.apache.org/jira/browse/HDFS-14264
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 2.7.1
> Reporter: Amithsha
> Priority: Major
>
> Datanode consuming more time on du -sk command as well as creating heavy IO on disk. In our prod systems, each disk of dfs usage is 3Tb, to caculate it, the datanode will spend 10-20min Avg time. Also nodemanagers are running on the same box during this du -sk operation could see heavy IO on disk.
> Datanode should cache the usage and also not to be cleared by any other process.
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