[HADOOP-4533] HDFS client of hadoop 0.18.1 and HDFS server 0.18.2 (0.18 branch) not compatible

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.18.1
• Fix Version/s: 0.18.2
• Hadoop Flags: Reviewed
• Assignee: Hairong Kuang
• Reporter: Runping Qi
• Created: 28/Oct/08 16:36
• Updated: 08/Jul/09 16:43
• Resolved: 29/Oct/08 21:52

Description

Not sure whether this is considered as a bug or is an expected case.
But here are the details.

I have a cluster using a build from hadoop 0.18 branch.
When I tried to use hadoop 0.18.1 dfs client to load files to it, I got the following exceptions:

hadoop --config ~/test dfs -copyFromLocal gridmix-env /tmp/.
08/10/28 16:23:00 INFO dfs.DFSClient: Exception in createBlockOutputStream java.io.IOException: Could not read from stream
08/10/28 16:23:00 INFO dfs.DFSClient: Abandoning block blk_-439926292663595928_1002
08/10/28 16:23:06 INFO dfs.DFSClient: Exception in createBlockOutputStream java.io.IOException: Could not read from stream
08/10/28 16:23:06 INFO dfs.DFSClient: Abandoning block blk_5160335053668168134_1002
08/10/28 16:23:12 INFO dfs.DFSClient: Exception in createBlockOutputStream java.io.IOException: Could not read from stream
08/10/28 16:23:12 INFO dfs.DFSClient: Abandoning block blk_4168253465442802441_1002
08/10/28 16:23:18 INFO dfs.DFSClient: Exception in createBlockOutputStream java.io.IOException: Could not read from stream
08/10/28 16:23:18 INFO dfs.DFSClient: Abandoning block blk_-2631672044886706846_1002
08/10/28 16:23:24 WARN dfs.DFSClient: DataStreamer Exception: java.io.IOException: Unable to create new block.
at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2349)
at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.access$1800(DFSClient.java:1735)
at org.apache.hadoop.dfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:1912)

08/10/28 16:23:24 WARN dfs.DFSClient: Error Recovery for block blk_-2631672044886706846_1002 bad datanode[0]
copyFromLocal: Could not get block locations. Aborting...
Exception closing file /tmp/gridmix-env
java.io.IOException: Could not get block locations. Aborting...
at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.processDatanodeError(DFSClient.java:2143)
at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.access$1400(DFSClient.java:1735)
at org.apache.hadoop.dfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:1889)

This problem has a severe impact on Pig 2.0, since it is pre-packaged with hadoop 0.18.1 and will use
Hadoop 0.18.1 dfs client in its interaction with hadoop cluster.
That means that Pig 2.0 will not work with the to be released hadoop 0.18.2

Issue Links

• relates to: HDFS-341 Better error message for DATA_TRANSFER_VERSION mismatched