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https://issues.apache.org/jira/browse/HDFS-13399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16434705#comment-16434705
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Konstantin Shvachko commented on HDFS-13399:
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??We are allowed to break compatibility at minor releases.??
Just to make sure we are on the same page. Hadoop *requires* backward
compatibility for minor releases. So please NO breaking! As I look at it we
cannot break compatibility ever: we can only add new methods, parameters, etc.
and deprecate old ones.
Package-private is not a part of API, so it can change.
??Should we consider creating client and server side configuration for enabling
/ disabling AlignmentContext processing???
I don't think we need a config parameter for that. This is controlled by the
code. If you pass an {{AlignmentContext}} as non null parameter it is used. M/R
clients for example wont need it, so null will be used by default.
> Make Client field AlignmentContext non-static.
> ----------------------------------------------
>
> Key: HDFS-13399
> URL: https://issues.apache.org/jira/browse/HDFS-13399
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: HDFS-12943
> Reporter: Plamen Jeliazkov
> Assignee: Plamen Jeliazkov
> Priority: Major
> Attachments: HDFS-13399-HDFS-12943.000.patch,
> HDFS-13399-HDFS-12943.001.patch
>
>
> In HDFS-12977, DFSClient's constructor was altered to make use of a new
> static method in Client that allowed one to set an AlignmentContext. This
> work is to remove that static field and make each DFSClient pass it's
> AlignmentContext down to the proxy Call level.
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