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https://issues.apache.org/jira/browse/HADOOP-8230?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13269678#comment-13269678
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Koji Noguchi commented on HADOOP-8230:
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bq. , but what is that use case?
I'm probably a minority here but I do want the "an option to disable durable
sync" not because it could be buggy but because it could be too stable compared
to 0.23/2.0. Before moving all of our non-HBase clusters to 2.0, we might use
1.1 for some time. During this period, I do not want some production projects
to start relying on the sync features then find some regression/difference on
2.0 blocking our upgrade schedule.
> Enable sync by default and disable append
> -----------------------------------------
>
> Key: HADOOP-8230
> URL: https://issues.apache.org/jira/browse/HADOOP-8230
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 1.0.0
> Reporter: Eli Collins
> Assignee: Eli Collins
> Fix For: 1.1.0
>
> Attachments: hadoop-8230.txt
>
>
> Per HDFS-3120 for 1.x let's:
> - Always enable the sync path, which is currently only enabled if
> dfs.support.append is set
> - Remove the dfs.support.append configuration option. We'll keep the code
> paths though in case we ever fix append on branch-1, in which case we can add
> the config option back
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