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https://issues.apache.org/jira/browse/HADOOP-8805?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13458976#comment-13458976
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Bo Wang commented on HADOOP-8805:
---------------------------------
bq. Did you test the specific getGroups command? Or just basic operations? I'm
skeptical...
I tested by start a namenode (via bin/hdfs namenode) then execute (bin/hdfs
groups <username>) using client from the other version.
If a non-exist username is used, a ExitCodeException is thrown and logged in
both new/old versions. The stack trace shows that new / old protocbufs are used.
>From new namenode log:
at org.apache.hadoop.security.Groups.getGroups(Groups.java:89)
at
org.apache.hadoop.security.UserGroupInformation.getGroupNames(UserGroupInformation.java:1251)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getGroupsForUser(NameNodeRpcServer.java:988)
*at
org.apache.hadoop.tools.impl.pb.service.GetUserMappingsProtocolPBServiceImpl.getGroupsForUser(GetUserMappingsProtocolPBServiceImpl.java:46)*
>From old namenode log:
at org.apache.hadoop.security.Groups.getGroups(Groups.java:89)
at
org.apache.hadoop.security.UserGroupInformation.getGroupNames(UserGroupInformation.java:1216)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getGroupsForUser(NameNodeRpcServer.java:971)
*at
org.apache.hadoop.hdfs.protocolPB.GetUserMappingsProtocolServerSideTranslatorPB.getGroupsForUser(GetUserMappingsProtocolServerSideTranslatorPB.java:46)*
> Move protocol buffer implementation of GetUserMappingProtocol from HDFS to
> Common
> ---------------------------------------------------------------------------------
>
> Key: HADOOP-8805
> URL: https://issues.apache.org/jira/browse/HADOOP-8805
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Bo Wang
> Assignee: Bo Wang
> Fix For: 2.0.3-alpha
>
> Attachments: HADOOP-8805.patch, HADOOP-8805-v2.patch,
> HADOOP-8805-v3.patch
>
>
> org.apache.hadoop.tools.GetUserMappingProtocol is used in both HDFS and YARN.
> We should move the protocol buffer implementation from HDFS to Common so that
> it can also be used by YARN.
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