[HDFS-10283] o.a.h.hdfs.server.namenode.TestFSImageWithSnapshot#testSaveLoadImageWithAppending fails intermittently

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.8.0
• Fix Version/s: 2.9.0, 3.0.0-alpha1
• Component/s: test
• Hadoop Flags: Reviewed
• Assignee: Mingliang Liu
• Reporter: Mingliang Liu
• Created: 13/Apr/16 21:49
• Updated: 30/Aug/16 01:17
• Resolved: 15/Apr/16 17:51

Description

The test fails with exception as following:

java.io.IOException: Failed to replace a bad datanode on the existing pipeline due to no more good datanodes being available to try. (Nodes: current=[DatanodeInfoWithStorage[127.0.0.1:47227,DS-dd109c14-79e5-4380-ac5e-4434cd7e25b5,DISK], DatanodeInfoWithStorage[127.0.0.1:56949,DS-6c0be75e-a78c-41b9-bfd0-7ee0cdefaa0e,DISK]], original=[DatanodeInfoWithStorage[127.0.0.1:47227,DS-dd109c14-79e5-4380-ac5e-4434cd7e25b5,DISK], DatanodeInfoWithStorage[127.0.0.1:56949,DS-6c0be75e-a78c-41b9-bfd0-7ee0cdefaa0e,DISK]]). The current failed datanode replacement policy is DEFAULT, and a client may configure this via 'dfs.client.block.write.replace-datanode-on-failure.policy' in its configuration.
	at org.apache.hadoop.hdfs.DataStreamer.findNewDatanode(DataStreamer.java:1162)
	at org.apache.hadoop.hdfs.DataStreamer.addDatanode2ExistingPipeline(DataStreamer.java:1232)
	at org.apache.hadoop.hdfs.DataStreamer.handleDatanodeReplacement(DataStreamer.java:1423)
	at org.apache.hadoop.hdfs.DataStreamer.setupPipelineInternal(DataStreamer.java:1338)
	at org.apache.hadoop.hdfs.DataStreamer.setupPipelineForAppendOrRecovery(DataStreamer.java:1321)
	at org.apache.hadoop.hdfs.DataStreamer.run(DataStreamer.java:599)