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https://issues.apache.org/jira/browse/HDFS-7979?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Wang updated HDFS-7979:
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Attachment: HDFS-7979.002.patch
Thanks for reviewing Colin. I was doing the zero test was just to initialize
prevBlockReportId, I don't think there's anything actually wrong with a zero
value.
To be more clear (and avoid the chance of re-initializing), I changed it to be
a Long with a null check instead. I left the Random being allocated on the
stack since it really should be used only once now, ever. LMK what you think.
> Initialize block report IDs with a random number
> ------------------------------------------------
>
> Key: HDFS-7979
> URL: https://issues.apache.org/jira/browse/HDFS-7979
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Affects Versions: 2.7.0
> Reporter: Andrew Wang
> Assignee: Andrew Wang
> Priority: Minor
> Attachments: HDFS-7979.001.patch, HDFS-7979.002.patch
>
>
> Right now block report IDs use system nanotime. This isn't that random, so
> let's start it at a random number for some more safety.
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