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https://issues.apache.org/jira/browse/HDFS-17190?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiaoqiao He resolved HDFS-17190.
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Fix Version/s: 3.4.0
Hadoop Flags: Reviewed
Assignee: Shuyan Zhang
Resolution: Fixed
> EC: Fix bug of OIV processing XAttr.
> ------------------------------------
>
> Key: HDFS-17190
> URL: https://issues.apache.org/jira/browse/HDFS-17190
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Shuyan Zhang
> Assignee: Shuyan Zhang
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
>
> When we need to use OIV to print EC information for a directory,
> `PBImageTextWriter#getErasureCodingPolicyName` will be called. Currently,
> this method uses `XATTR_ERASURECODING_POLICY.contains(xattr.getName())` to
> filter and obtain EC XAttr, which is very dangerous. If we have an XAttr
> whose name happens to be a substring of `hdfs.erasurecoding.policy`, then
> `getErasureCodingPolicyName` will return the wrong result. Our internal
> production environment has customized some XAttrs, and this bug caused errors
> in the parsing results of OIV when using `-ec` option.
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