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https://issues.apache.org/jira/browse/HDFS-2123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13059629#comment-13059629
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Todd Lipcon commented on HDFS-2123:
-----------------------------------
hmm.. I added it as a deprecated key, but I think it's now going to have the
wrong effect - ie it will treat the byte value as a number of transactions.
Instead, it's probably better to emit a warning and ignore. Let me update the
patch.
> 1073: Checkpoint interval should be based on txn count, not size
> ----------------------------------------------------------------
>
> Key: HDFS-2123
> URL: https://issues.apache.org/jira/browse/HDFS-2123
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: name-node
> Affects Versions: Edit log branch (HDFS-1073)
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: Edit log branch (HDFS-1073)
>
> Attachments: hdfs-2123.txt
>
>
> Currently, the administrator can configure the secondary namenode to
> checkpoint either every N seconds, or every N bytes worth of edit log. It
> would make more sense to get rid of the size-based interval and instead allow
> the administrator to specify checkpoints every N transactions. This also
> simplifies the code a little bit.
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