LiuGuH

add kerberos support

1

add kerberos support for xlearning

MAPREDUCE-7469 NNBench createControlFiles should use thread pool to i…

11

### Description of PR JIRA: [MAPREDUCE-7469](https://issues.apache.org/jira/browse/MAPREDUCE-7469) NNBench createControlFiles should use thread pool to improve performance. ### How was this patch tested? Add test case for this.

HDFS-17121. BPServiceActor to provide new thread to handle FBR

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### Description of PR After [HDFS-16016](https://issues.apache.org/jira/browse/HDFS-16016) , it makes ibr in a thread to avoid heartbeat blocking with ibr when require readlock in Datanode. Now fbr should do as this....

HDFS-17357. NioInetPeer.close() should close socket connection.

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### Description of PR JIRA: [HDFS-17357](https://issues.apache.org/jira/browse/HDFS-17357) NioInetPeer.close() now do not close socket connection. And I found 3w+ connections leakage in datanode . And I found many warn message as blew....

HDFS-17300. [SBN READ] A rpc call in Observer should throw ObserverRetryOnActiveException if its stateid is always lower than client stateid for a configured time.

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…ateid is always delayed with Active Namenode for a period of time ### Description of PR JIRA: [HDFS-17300](https://issues.apache.org/jira/browse/HDFS-17300) Now when Observer is enable, Observer will update its stateid through that...

HDFS-16757. Add a new method copyBlockCrossNamespace to DataNode

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### Description of PR As described in https://issues.apache.org/jira/browse/HDFS-16757 This is a new version which based on [5719](https://github.com/apache/hadoop/pull/5719) ### How was this patch tested? Add test case for it.

HDFS-16757. Add a new method copyBlockCrossNamespace to DataNode

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### Description of PR As described below [HDFS-16757](https://issues.apache.org/jira/browse/HDFS-16757) This is the base PR of FastCopy [HDFS-2139](https://issues.apache.org/jira/browse/HDFS-2139)

HDFS-2139. Fast copy for HDFS.FastCopy (This is used for test case . And in the futuer this will split to subtask submission. )

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### Description of PR https://issues.apache.org/jira/browse/HDFS-2139 This is used for compile to verify this is correct. It is for test case . And in the futuer this will split to subtask...

HDFS-17781.Fix webImageViewer getContentSummary return wrong result when inode is a ec file

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### Description of PR As described [HDFS-17781](https://issues.apache.org/jira/browse/HDFS-17781) Now when use hdfs oiv Web mode for offline analysis , the ec file's getContentSummary is wrong. It supports replicated file only. `data[3]...

HDFS-16749. RBF: Gets the wrong directory information from Trash

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### Description of PR As described in HDFS-16749. Purpose ：[RBF] Fix ls user trash path returns mountpoint path that real nameservice's trash path is not exists There are two nameservices...