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https://issues.apache.org/jira/browse/HDFS-12947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16300959#comment-16300959
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Xiao Chen commented on HDFS-12947:
----------------------------------

Idea of adding a config sounds good, but -1 on changing the default for compat 
reasons.

> Limit the number of Snapshots allowed to be created for a Snapshottable 
> Directory
> ---------------------------------------------------------------------------------
>
>                 Key: HDFS-12947
>                 URL: https://issues.apache.org/jira/browse/HDFS-12947
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Shashikant Banerjee
>            Assignee: Shashikant Banerjee
>         Attachments: HDFS-12947.001.patch
>
>
> Currently, A snapshottable directory is able to accommodate 65,536 snapshots. 
> In case a directory has large no of snapshots , deletion of any of the 
> earlier snapshots take a lot of time which might lead to namenode crash 
> (HDFS-11225).
> This jira is introduced to limit the no of the snapshots under a 
> snapshottable directory to a reasonable value(say 10) which can be overriden.



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