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https://issues.apache.org/jira/browse/HADOOP-8230?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13269286#comment-13269286
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Sanjay Radia commented on HADOOP-8230:
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> Couldn't the same be said for any new feature? Given that sync was fixed
> prior to the 1.0 release,
> I don't see why this should be considered an incompatible change.
This was turned on in the 20 originally and then we had to turn it off due bugs.
Given that the default in Hadoop 1 is off, why not leave it off and give a way
to turn it on.
The current default is off and I don't see a reason to change that default in
1.1.
There are installations have that are using the current default.
Can you please explain the reason the make this change?
> 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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