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https://issues.apache.org/jira/browse/HADOOP-12334?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gaurav Kanade updated HADOOP-12334:
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Attachment: HADOOP-12334.05.patch
Removing yet more (and hopefully last few) whitespace errors
> Change Mode Of Copy Operation of HBase WAL Archiving to bypass Azure Storage
> Throttling after retries
> -----------------------------------------------------------------------------------------------------
>
> Key: HADOOP-12334
> URL: https://issues.apache.org/jira/browse/HADOOP-12334
> Project: Hadoop Common
> Issue Type: Improvement
> Components: tools
> Reporter: Gaurav Kanade
> Assignee: Gaurav Kanade
> Attachments: HADOOP-12334.01.patch, HADOOP-12334.02.patch,
> HADOOP-12334.03.patch, HADOOP-12334.04.patch, HADOOP-12334.05.patch
>
>
> HADOOP-11693 mitigated the problem of HMaster aborting regionserver due to
> Azure Storage Throttling event during HBase WAL archival. The way this was
> achieved was by applying an intensive exponential retry when throttling
> occurred.
> As a second level of mitigation we will change the mode of copy operation if
> the operation fails even after all retries -i.e. we will do a client side
> copy of the blob and then copy it back to destination. This operation will
> not be subject to throttling and hence should provide a stronger mitigation.
> However it is more expensive, hence we do it only in the case we fail after
> all retries
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