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https://issues.apache.org/jira/browse/HADOOP-12011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14568383#comment-14568383
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Kai Zheng commented on HADOOP-12011:
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Thanks Uma.
bq. Why DumpUtil.java placed in source, we used it only in test right?
Yes it's currently only used in test codes. In HADOOP-11540 and HADOOP-12041
the utility functions in {{DumpUtil}} will be leveraged and more functions will
be added into, mainly to dump data in the concrete processing during
coding/decoding in coders. Some dumps have to be added to coder internals to
understand in which step it's not working.
> Allow to dump verbose information to ease debugging in raw erasure coders
> -------------------------------------------------------------------------
>
> Key: HADOOP-12011
> URL: https://issues.apache.org/jira/browse/HADOOP-12011
> Project: Hadoop Common
> Issue Type: Sub-task
> Reporter: Kai Zheng
> Assignee: Kai Zheng
> Fix For: HDFS-7285
>
> Attachments: HADOOP-12011-HDFS-7285-v1.patch,
> HADOOP-12011-HDFS-7285-v3.patch, HADOOP-12011-HDFS-7285-v4.patch
>
>
> While working on native erasure coders, it was found useful to dump key
> information like encode/decode matrix, erasures and etc. for the
> encode/decode call.
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