[jira] [Created] (HDFS-14946) Erasure Coding: Block recovery failed during decommissioning

["Fei Hui (Jira)" <ji...@apache.org>]

Fei Hui created HDFS-14946:
------------------------------

             Summary: Erasure Coding: Block recovery failed during decommissioning
                 Key: HDFS-14946
                 URL: https://issues.apache.org/jira/browse/HDFS-14946
             Project: Hadoop HDFS
          Issue Type: Improvement
         Environment: DataNode logs as follow
{quote}
org.apache.hadoop.HadoopIllegalArgumentException: No enough valid inputs are provided, not recoverable
	at org.apache.hadoop.io.erasurecode.rawcoder.ByteBufferDecodingState.checkInputBuffers(ByteBufferDecodingState.java:119)
	at org.apache.hadoop.io.erasurecode.rawcoder.ByteBufferDecodingState.<init>(ByteBufferDecodingState.java:47)
	at org.apache.hadoop.io.erasurecode.rawcoder.RawErasureDecoder.decode(RawErasureDecoder.java:86)
	at org.apache.hadoop.hdfs.server.datanode.erasurecode.StripedBlockReconstructor.reconstructTargets(StripedBlockReconstructor.java:126)
	at org.apache.hadoop.hdfs.server.datanode.erasurecode.StripedBlockReconstructor.reconstruct(StripedBlockReconstructor.java:97)
	at org.apache.hadoop.hdfs.server.datanode.erasurecode.StripedBlockReconstructor.run(StripedBlockReconstructor.java:60)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:748)
{quote}
Block recovery always failed because of srcNodes in the wrong order
            Reporter: Fei Hui






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