https://community.cloudera.com/t5/Support-Questions/Datanode-Failures-DataXceiver-error-processing-WRITE-BLOCK/m-p/173845#M136108 <P>for writing issue. if you share more information also gets better understanding.</P><P>1) Check Data node is listing in Ambari WI</P><P>2) if data node is fine, it may be the jira as below.</P><P><A href="https://issues.apache.org/jira/browse/HDFS-770" target="_blank">https://issues.apache.org/jira/browse/HDFS-770</A></P> Sat, 25 Mar 2017 09:10:01 GMT shivkumar82015 2017-03-25T09:10:01Z