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Posted to issues@sentry.apache.org by "Vamsee Yarlagadda (JIRA)" <ji...@apache.org> on 2017/09/05 01:58:00 UTC

[jira] [Commented] (SENTRY-1919) Sentry should prevent two snapshots from being sent to HDFS

    [ https://issues.apache.org/jira/browse/SENTRY-1919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16153030#comment-16153030 ] 

Vamsee Yarlagadda commented on SENTRY-1919:
-------------------------------------------

This can only be achieved in the context of single sentry server right. i.e we should make sure a single sentry server doesn't serve more than two HDFS requests at the same time. 

> Sentry should prevent two snapshots from being sent to HDFS
> -----------------------------------------------------------
>
>                 Key: SENTRY-1919
>                 URL: https://issues.apache.org/jira/browse/SENTRY-1919
>             Project: Sentry
>          Issue Type: Bug
>          Components: Sentry
>    Affects Versions: 2.0.0
>            Reporter: Alexander Kolbasov
>
> When HDFS sync and HDFS HA is enabled it could be possible that two NameNodes will both ask for the full snapshot at the same time. This can double the size of memory needed to serve snapshot and should be prevented.



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