WARN hdfs.DataStreamer: Caught exception

When uploading files to hdfs, reported such a mistake:

Exception in thread "main" java.lang.RuntimeException: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namenode.SafeModeException):

WARN hdfs.DataStreamer: Caught exception
java.lang.InterruptedException
    at java.lang.Object.wait(Native Method)
    at java.lang.Thread.join(Thread.java:1252)
    at java.lang.Thread.join(Thread.java:1326)
    at org.apache.hadoop.hdfs.DataStreamer.closeResponder(DataStreamer.java:980)
    at org.apache.hadoop.hdfs.DataStreamer.endBlock(DataStreamer.java:630)
    at org.apache.hadoop.hdfs.DataStreamer.run(DataStreamer.java:807)

After Quguan online to find reasons to enter https://issues.apache.org/jira/browse/HDFS-10429 View

The reason is translated: Initially, datastreamer :: closeresponder always print a warning about interruptedexception; as hdfs-9812, dfsoutputstream :: closeimpl always forced to shut down the thread, which can lead to interruptedexception.
A simple fix is to use the debug level log rather than the warning level.

But if he do not think that is important, then you can ignore, because I think there might not be uploaded in accordance with standard hdfs upload only required official website reported wrong, but if it is then modified using the above method.