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Posted to issues@ozone.apache.org by "Mukul Kumar Singh (Jira)" <ji...@apache.org> on 2020/06/09 10:04:00 UTC

[jira] [Commented] (HDDS-3761) "ozone fs -get" is way to slow than "ozone sh key get"

    [ https://issues.apache.org/jira/browse/HDDS-3761?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17129096#comment-17129096 ] 

Mukul Kumar Singh commented on HDDS-3761:
-----------------------------------------

Are there lots of file and directories on this bucket? in the filesystem code path, with HDDS-2939, there can be multiple iterations of the RocksDB to do prefix matching. 

cc [~rakeshr]

> "ozone fs -get" is way to slow than "ozone sh key get"
> ------------------------------------------------------
>
>                 Key: HDDS-3761
>                 URL: https://issues.apache.org/jira/browse/HDDS-3761
>             Project: Hadoop Distributed Data Store
>          Issue Type: Improvement
>            Reporter: Sammi Chen
>            Priority: Major
>
> Read time spend to download a 7GB+ object, 
> time ozone fs -get o3fs://konajdk-profiler.s325d55ad283aa400af464c76d713c07ad/part-00000 ./part-00000-back
> 2020-06-09 11:19:47,284 [main] INFO impl.MetricsConfig: Loaded properties from hadoop-metrics2.properties
> 2020-06-09 11:19:47,339 [main] INFO impl.MetricsSystemImpl: Scheduled Metric snapshot period at 10 second(s).
> 2020-06-09 11:19:47,339 [main] INFO impl.MetricsSystemImpl: XceiverClientMetrics metrics system started
> real	45m26.152s
> user	0m28.576s
> sys	0m13.488s
> 222
> time bin/hadoop fs -get s3a://konajdk-profiler/part-00000 ./part-00000-back-1
> 20/06/09 11:19:57 INFO security.UserGroupInformation: Hadoop UGI authentication : SIMPLE
> real	3m3.542s
> user	0m7.644s
> sys	0m12.016s
> 222
> time bin/ozone sh key get s325d55ad283aa400af464c76d713c07ad/konajdk-profiler/part-00000 ./part-00000-back
> real	1m26.900s
> user	0m19.604s
> sys	0m10.280s



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