Colin Patrick Mccabe 70f33f5eff HDFS-7035. Make adding a new data directory to the DataNode an atomic operation and improve error handling (Lei Xu via Colin P. McCabe)
(cherry picked from commit a9331fe9b071fdcdae0c6c747d7b6b306142e671)

(cherry picked from commit ec2621e907742aad0264c5f533783f0f18565880)

Conflicts:
	hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataStorage.java

(cherry picked from commit d79a5849999cdb0bc315938b80ed71b4f2dcb720)
2015-08-30 12:13:33 -07:00
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