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Posted to issues@ozone.apache.org by "Attila Doroszlai (Jira)" <ji...@apache.org> on 2021/07/09 09:42:00 UTC
[jira] [Resolved] (HDDS-5243) Return latest version of key location
for client
[ https://issues.apache.org/jira/browse/HDDS-5243?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Attila Doroszlai resolved HDDS-5243.
------------------------------------
Fix Version/s: 1.2.0
Resolution: Implemented
> Return latest version of key location for client
> ------------------------------------------------
>
> Key: HDDS-5243
> URL: https://issues.apache.org/jira/browse/HDDS-5243
> Project: Apache Ozone
> Issue Type: Improvement
> Reporter: Janus Chow
> Assignee: Janus Chow
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.2.0
>
>
> Currently, OmKeyInfo uses a `keyLocationVersions: List<OmKeyLocationInfoGroup>` to store all versions of KeyLocation information. If a key has lots of versions, OM needs to reply all the content of `keyLocationVersions` to the client, which may cause the following IPC warning, when the size exceeds the client IPC response size limit becomes an error.
> {code:java}
> 2021-05-18 23:10:07,246 [IPC Server handler 97 on default port 9862] WARN org.apache.hadoop.ipc.Server: Large response size 20541123 for call Call#3 Retry#0 org.apache.hadoop.ozone.om.protocol.OzoneManagerProtocol.submitRequest from 10.130.20.239:46306
> {code}
> This ticket is to add an config for client to only query the latest content in `keyLocationVersions`, which can reduce the IPC response size and improve OM's performance by excluding lots of unnecessary work with old key locations.
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