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https://issues.apache.org/jira/browse/HDFS-11799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16172114#comment-16172114
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Hudson commented on HDFS-11799:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #12916 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/12916/])
HDFS-11799. Introduce a config to allow setting up write pipeline with (brahma:
rev fda1221c55101d97ac62e1ee4e3ddf9a915d5363)
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DataStreamer.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/client/HdfsClientConfigKeys.java
* (add)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestReplaceDatanodeFailureReplication.java
* (edit) hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSClient.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/tools/TestHdfsConfigFields.java
> Introduce a config to allow setting up write pipeline with fewer nodes than
> replication factor
> ----------------------------------------------------------------------------------------------
>
> Key: HDFS-11799
> URL: https://issues.apache.org/jira/browse/HDFS-11799
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Yongjun Zhang
> Assignee: Brahma Reddy Battula
> Attachments: HDFS-11799-002.patch, HDFS-11799-003.patch,
> HDFS-11799-004.patch, HDFS-11799-005.patch, HDFS-11799-006.patch,
> HDFS-11799-007.patch, HDFS-11799-008.patch, HDFS-11799-009.patch,
> HDFS-11799.patch
>
>
> During pipeline recovery, if not enough DNs can be found, if
> dfs.client.block.write.replace-datanode-on-failure.best-effort
> is enabled, we let the pipeline to continue, even if there is a single DN.
> Similarly, when we create the write pipeline initially, if for some reason we
> can't find enough DNs, we can have a similar config to enable writing with a
> single DN.
> More study will be done.
>
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