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https://issues.apache.org/jira/browse/HADOOP-4499?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Raghu Angadi updated HADOOP-4499:
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Attachment: HADOOP-4499-branch-19.patch
The problem was that read() return data even if gotEOS for datanode connection
is already set because there could be data left in FSInputChecker buffer (upto
512 bytes). The attached patch sends checksum only when 'gotEOS' changes from
false to true.
I will attach a trunk patch that removes the debug log.
> DFSClient should invoke checksumOk only once.
> ---------------------------------------------
>
> Key: HADOOP-4499
> URL: https://issues.apache.org/jira/browse/HADOOP-4499
> Project: Hadoop Core
> Issue Type: Bug
> Affects Versions: 0.18.0
> Reporter: Raghu Angadi
> Assignee: Raghu Angadi
> Priority: Blocker
> Fix For: 0.19.1
>
> Attachments: HADOOP-4499-branch-19.patch
>
>
> This is a follow up for HADOOP-3914. HADOOP-3914 added a log when DFSClient
> tries to invoke checksumOk more than once. This jira is mainly for removing
> the debug log since we know why it happens.
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