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Posted to hdfs-issues@hadoop.apache.org by "Siyao Meng (JIRA)" <ji...@apache.org> on 2019/08/10 08:18:00 UTC
[jira] [Created] (HDFS-14718) HttpFS: Sort LISTSTATUS response by
key names
Siyao Meng created HDFS-14718:
---------------------------------
Summary: HttpFS: Sort LISTSTATUS response by key names
Key: HDFS-14718
URL: https://issues.apache.org/jira/browse/HDFS-14718
Project: Hadoop HDFS
Issue Type: Improvement
Components: httpfs
Reporter: Siyao Meng
Assignee: Siyao Meng
Example: see description of HDFS-14665.
Root cause:
WebHDFS is [using a TreeMap|https://github.com/apache/hadoop/blob/99bf1dc9eb18f9b4d0338986d1b8fd2232f1232f/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/JsonUtil.java#L120] to serialize HdfsFileStatus, while HttpFS [uses a LinkedHashMap|https://github.com/apache/hadoop/blob/6fcc5639ae32efa5a5d55a6b6cf23af06fc610c3/hadoop-hdfs-project/hadoop-hdfs-httpfs/src/main/java/org/apache/hadoop/fs/http/server/FSOperations.java#L107] to serialize FileStatus.
Questions:
Why the difference? Is this intentional? e.g. for some performance concern on HttpFS?
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