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https://issues.apache.org/jira/browse/HADOOP-19180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17875024#comment-17875024
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ASF GitHub Bot commented on HADOOP-19180:
-----------------------------------------
zhengchenyu commented on PR #6813:
URL: https://github.com/apache/hadoop/pull/6813#issuecomment-2297822194
@zhangshuyan0 @Hexiaoqiao @slfan1989 @haiyang1987 @ZanderXu
Thanks for you review. Even though the pr is merged, the failed test still
exists. And I have verified through the [pr test](#6972) that the failed unit
test is not caused by this PR. When there are changes to the hadoop-common
native code, docker ci "precommit-run CentOS 7" will be triggered, then the
fail unit test was reproduced.
> Note: If there are no changes to the hadoop-common native code, docker ci
"precommit-run CentOS 7" will be ignored. The failed unit test will not be
reproduced.
It is strange! I found that only "precommit-run CentOS 7" will reproduce the
failures of TestServiceInterruptHandling:: testRegisterAndRaise. I can not
reproduce this in my environment, even though my environment have been started
by start-build-env.sh. I will try to fix it in another pr.
> 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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