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https://issues.apache.org/jira/browse/HBASE-18081?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16017306#comment-16017306
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Anoop Sam John commented on HBASE-18081:
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The code assumption is that when preamble bytes read, the next 2 bytes are
avail in the socket and it tries to read that in one shot and process. Either
we have to have a waiting loop here to complete the preamble read and process.
Ya the 4 bytes preamble is read but we miss next 2 bytes as expected. What if
preamble bytes itself comes with a halt in btw, May be how the data part been
read (even in multiple reads it comes in) way is needed for the preamble
processing also?
> The way we process connection preamble in SimpleRpcServer is broken
> -------------------------------------------------------------------
>
> Key: HBASE-18081
> URL: https://issues.apache.org/jira/browse/HBASE-18081
> Project: HBase
> Issue Type: Bug
> Reporter: Duo Zhang
> Attachments: HBASE-18081-testcase.patch
>
>
> Though very rare, but if the preamble is not sent at once, the logic will be
> broken.
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