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https://issues.apache.org/jira/browse/HDFS-4618?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon updated HDFS-4618:
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Attachment: hdfs-4618.txt
attached patch changes default to 1M
> default for checkpoint txn interval is too low
> ----------------------------------------------
>
> Key: HDFS-4618
> URL: https://issues.apache.org/jira/browse/HDFS-4618
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 2.0.4-alpha
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Attachments: hdfs-4618.txt
>
>
> The default checkpoint interval is currently set to 40k transactions. That's
> way too low (I don't know what idiot set it to that.. oh wait, it was me...)
> The old default in 1.0 is 64MB. Assuming an average of 100 bytes per txn, we
> should have the txn-count based interval default to at least 640,000. I'd
> like to change to 1M as a nice round number.
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