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https://issues.apache.org/jira/browse/HDFS-12864?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Elek, Marton updated HDFS-12864:
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Attachment: HDFS-12864-HDFS-7240.001.patch
> Ozone: Turn off full synced write in RocksDB MetadataStore
> ----------------------------------------------------------
>
> Key: HDFS-12864
> URL: https://issues.apache.org/jira/browse/HDFS-12864
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ozone
> Reporter: Elek, Marton
> Assignee: Elek, Marton
> Attachments: HDFS-12864-HDFS-7240.001.patch
>
>
> Based on the suggestion from [~xyao] I created the patch to turn off fully
> synced write in the rocksdb.
> With this patch we measured about 10x performance gain (200 nodes cluster +
> 30 corona instance).
> 1. We don't need fully synced rocksdb writing, as HA will cover the few cases
> when a node would be lost
> 2. Long term (IMHO) we need to add a possibility to configure any settings in
> rocksdb, so it could be turned off, but the setSync(false) is a reasonable
> default.
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