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Posted to hdfs-issues@hadoop.apache.org by "Konstantin Shvachko (JIRA)" <ji...@apache.org> on 2019/05/20 23:17:00 UTC
[jira] [Updated] (HDFS-14502) keepResults option in
NNThroughputBenchmark should call saveNamespace()
[ https://issues.apache.org/jira/browse/HDFS-14502?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Konstantin Shvachko updated HDFS-14502:
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Attachment: HDFS-14502.001.patch
> keepResults option in NNThroughputBenchmark should call saveNamespace()
> -----------------------------------------------------------------------
>
> Key: HDFS-14502
> URL: https://issues.apache.org/jira/browse/HDFS-14502
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 2.7.6
> Reporter: Konstantin Shvachko
> Assignee: Konstantin Shvachko
> Priority: Major
> Attachments: HDFS-14502.001.patch
>
>
> {{-keepResults}} option is usually used to make it possible to rerun NNThroughputBenchmark with existing namespace state. E.g. first generate files with {{create}} command and then run {{fileStatus}} command on generated files.
> NNThroughputBenchmark should call {{saveNamespace()}} when {{-keepResults}} option is specified. Otherwise NN startup takes a while since it needs to digest large edits file starting from the empty image.
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