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https://issues.apache.org/jira/browse/HDFS-11082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16110201#comment-16110201
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SammiChen edited comment on HDFS-11082 at 8/4/17 1:53 AM:
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Hi [~andrew.wang], I'm preparing the patch. For how to provide replicated EC
policy, here is my overall thoughts,
1. replicated EC policy is one of system built-in policy, like other built-in
policies, such as RS-6-3-64k, it can be listed, enabled, disabled, but cannot
be removed.
2. replicated EC policy will have codec name "replication" with (1,1) parameter
combination
3. replicated EC policy can be set, unset, get from directory, but not file.
4. replicated EC policy should be treated specially when allocate block and
DFSClient side data read/write
I'd like to hear your opinions.
was (Author: sammi):
Hi [~andrew.wang], I'm preparing the patch. For how to provide replicated EC
policy, here is my overall thoughts,
1. replicated EC policy is one of system built-in policy, like other built-in
policies, such as RS-6-3-64k, it can be listed, enabled, disabled, but cannot
be removed.
2. replicated EC policy will have codec name "replication" with (1,1) parameter
combination
3. replicated EC policy can be set, unset, get from directory & file
4. replicated EC policy should be treated specially when allocate block and
DFSClient side data read/write
I'd like to hear your opinions.
> Erasure Coding : Provide replicated EC policy to just replicating the files
> ---------------------------------------------------------------------------
>
> Key: HDFS-11082
> URL: https://issues.apache.org/jira/browse/HDFS-11082
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: erasure-coding
> Reporter: Rakesh R
> Assignee: SammiChen
> Priority: Critical
> Labels: hdfs-ec-3.0-must-do
> Attachments: HDFS-11082.001.patch
>
>
> The idea of this jira is to provide a new {{replicated EC policy}} so that we
> can override the EC policy on a parent directory and go back to just
> replicating the files based on replication factors.
> Thanks [~andrew.wang] for the
> [discussions|https://issues.apache.org/jira/browse/HDFS-11072?focusedCommentId=15620743&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15620743].
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