binlijin created HDFS-3587:
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Summary: Direct write the packet to datanode when dataQueue is
empty
Key: HDFS-3587
URL: https://issues.apache.org/jira/browse/HDFS-3587
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: binlijin
Current when FSDataOutputStream's write and sync method are called a new Packet
may be created and put into dataQueue, the daemon DataStreamer will get packet
from the dataQueue and write to datanode. If we write the packet direct to
datanode when the packet put to dataQueue and the dataQueue is empty like the
RPC Handler write response, may be this be good for hbase?
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