Yongjun Zhang created HDFS-11799:
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Summary: Introduce a config to allow setting up write pipeline
with single node
Key: HDFS-11799
URL: https://issues.apache.org/jira/browse/HDFS-11799
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Yongjun Zhang
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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