Shuyan Zhang created HDFS-17134:
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Summary: RBF: Fix duplicate results of getListing through Router.
Key: HDFS-17134
URL: https://issues.apache.org/jira/browse/HDFS-17134
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Shuyan Zhang
The result of `getListing` in NameNode are sorted based on `byte[]`, while the
Router side is based on `String`. If there are special characters in path, the
sorting result of the router is inconsistent with the namenode. This may result
in duplicate `getListing` results obtained by the client due to wrong
`startAfter` parameter.
For exemple, namenode returns [path1, path2, path3], while router returns
[path1, path3, path2] to client. Then client will pass `startAfter` as `path2`
at the next iteration, so it will receive `path3` again.
We need to fix the Router code so that the order of its results is the same as
NameNode.
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