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https://issues.apache.org/jira/browse/HDFS-14665?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Wei-Chiu Chuang reopened HDFS-14665:
------------------------------------
Reopen for branch-3.1
> HttpFS: LISTSTATUS response is missing HDFS-specific fields
> -----------------------------------------------------------
>
> Key: HDFS-14665
> URL: https://issues.apache.org/jira/browse/HDFS-14665
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: httpfs
> Reporter: Siyao Meng
> Assignee: Siyao Meng
> Priority: Major
> Fix For: 3.3.0, 3.2.1
>
>
> WebHDFS:
> {code:java}
> GET /webhdfs/v1/tmp/?op=LISTSTATUS&user.name=hdfs HTTP/1.1
> {code}
> {code}
> {
> "FileStatuses": {
> "FileStatus": [
> ...
> {
> "accessTime": 0,
> "blockSize": 0,
> "childrenNum": 0,
> "fileId": 16395,
> "group": "hadoop",
> "length": 0,
> "modificationTime": 1563893395614,
> "owner": "mapred",
> "pathSuffix": "logs",
> "permission": "1777",
> "replication": 0,
> "storagePolicy": 0,
> "type": "DIRECTORY"
> }
> ]
> }
> }
> {code}
> HttpFS:
> {code:java}
> GET /webhdfs/v1/tmp/?op=LISTSTATUS&user.name=hdfs HTTP/1.1
> {code}
> {code}
> {
> "FileStatuses": {
> "FileStatus": [
> ...
> {
> "pathSuffix": "logs",
> "type": "DIRECTORY",
> "length": 0,
> "owner": "mapred",
> "group": "hadoop",
> "permission": "1777",
> "accessTime": 0,
> "modificationTime": 1563893395614,
> "blockSize": 0,
> "replication": 0
> }
> ]
> }
> }
> {code}
> You can see the same LISTSTATUS request to HttpFS is missing 3 fields:
> {code}
> "childrenNum" (should only be none 0 for directories)
> "fileId"
> "storagePolicy"
> {code}
> The same applies to LISTSTATUS_BATCH, which might be using the same
> underlying calls to compose the response.
> Root cause:
> [toJsonInner|https://github.com/apache/hadoop/blob/17e8cf501b384af93726e4f2e6f5e28c6e3a8f65/hadoop-hdfs-project/hadoop-hdfs-httpfs/src/main/java/org/apache/hadoop/fs/http/server/FSOperations.java#L120]
> didn't serialize the HDFS-specific keys from FileStatus.
> Also may file another Jira to align the order of the keys in the responses.
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