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https://issues.apache.org/jira/browse/HADOOP-19180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17874462#comment-17874462
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ASF GitHub Bot commented on HADOOP-19180:
-----------------------------------------
hadoop-yetus commented on PR #6972:
URL: https://github.com/apache/hadoop/pull/6972#issuecomment-2294801991
:broken_heart: **-1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 0s | | Docker mode activated. |
| -1 :x: | patch | 0m 18s | |
https://github.com/apache/hadoop/pull/6972 does not apply to trunk. Rebase
required? Wrong Branch? See
https://cwiki.apache.org/confluence/display/HADOOP/How+To+Contribute for help.
|
| Subsystem | Report/Notes |
|----------:|:-------------|
| GITHUB PR | https://github.com/apache/hadoop/pull/6972 |
| Console output |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6972/7/console |
| versions | git=2.34.1 |
| Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
This message was automatically generated.
> EC: Fix calculation errors caused by special index order
> --------------------------------------------------------
>
> Key: HADOOP-19180
> URL: https://issues.apache.org/jira/browse/HADOOP-19180
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Chenyu Zheng
> Assignee: Chenyu Zheng
> Priority: Critical
> Labels: pull-request-available
>
> I found that if the erasedIndexes distribution is such that the parity index
> is in front of the data index, ec will produce wrong results when decoding.
> In fact, HDFS-15186 has described this problem, but does not fundamentally
> solve it.
> The reason is that the code assumes that erasedIndexes is preceded by the
> data index and followed by parity index. If there is a parity index placed in
> front of the data index, a calculation error will occur.
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