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https://issues.apache.org/jira/browse/HADOOP-13226?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15315236#comment-15315236
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Hudson commented on HADOOP-13226:
---------------------------------

SUCCESS: Integrated in Hadoop-trunk-Commit #9913 (See 
[https://builds.apache.org/job/Hadoop-trunk-Commit/9913/])
Revert "HADOOP-13226 Support async call retry and failover." (wang: rev 
5360da8bd9f720384860f411bee081aef13b4bd4)
* 
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/retry/AsyncCallHandler.java
* 
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/HATestUtil.java
* hadoop-common-project/hadoop-common/dev-support/findbugsExcludeFile.xml
* 
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/retry/CallReturn.java
* 
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/ProtobufRpcEngine.java
* 
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestAsyncIPC.java
* 
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/AsyncDistributedFileSystem.java
* 
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestAsyncDFS.java
* 
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestAsyncHDFSWithHA.java
* 
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/retry/RetryInvocationHandler.java
* 
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Client.java
* 
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/concurrent/AsyncGet.java
* 
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocolPB/ClientNamenodeProtocolTranslatorPB.java
* 
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/retry/RetryPolicies.java


> Support async call retry and failover
> -------------------------------------
>
>                 Key: HADOOP-13226
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13226
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: io, ipc
>            Reporter: Xiaobing Zhou
>            Assignee: Tsz Wo Nicholas Sze
>             Fix For: HDFS-9924
>
>         Attachments: h10433_20160524.patch, h10433_20160525.patch, 
> h10433_20160525b.patch, h10433_20160527.patch, h10433_20160528.patch, 
> h10433_20160528c.patch
>
>
> In current Async DFS implementation, file system calls are invoked and 
> returns Future<?> immediately to clients. Clients call Future#get to retrieve 
> final results. Future#get internally invokes a chain of callbacks residing in 
> ClientNamenodeProtocolTranslatorPB, ProtobufRpcEngine and ipc.Client. The 
> callback path bypasses the original retry layer/logic designed for 
> synchronous DFS. This proposes refactoring to make retry also works for Async 
> DFS.



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