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https://issues.apache.org/jira/browse/HDFS-11346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16687690#comment-16687690
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Anuj Jain commented on HDFS-11346:
----------------------------------
We also face the same issue. After restarting data node log entries are like :
2018-11-15 09:04:14,899 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode:
platform1:50010:DataXceiver error processing READ_BLOCK operation src:
/10.9.4.40:50606 dst: /10.9.4.40:50010
java.io.IOException: Not ready to serve the block pool,
BP-1623658321-10.9.4.40-1530124522417.
at
org.apache.hadoop.hdfs.server.datanode.DataXceiver.checkAndWaitForBP(DataXceiver.java:1290)
at
org.apache.hadoop.hdfs.server.datanode.DataXceiver.checkAccess(DataXceiver.java:1298)
at
org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:520)
at
org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opReadBlock(Receiver.java:148)
at
org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:103)
at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:246)
at java.lang.Thread.run(Thread.java:748)
And also dfsadminreport count this node as dead node even data node service is
running.
> DataXceiver error processing READ_BLOCK operation
> -------------------------------------------------
>
> Key: HDFS-11346
> URL: https://issues.apache.org/jira/browse/HDFS-11346
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 2.7.1
> Reporter: gehaijiang
> Priority: Major
>
> datanode service restart， datanode logfile generate many error information：
> example：
> unlinked=false
> at
> org.apache.hadoop.hdfs.server.datanode.BlockSender.<init>(BlockSender.java:248)
> at
> org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:541)
> at
> org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opReadBlock(Receiver.java:116)
> at
> org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:71)
> at
> org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:253)
> at java.lang.Thread.run(Thread.java:745)
> 2017-01-19 00:10:11,772 ERROR
> org.apache.hadoop.hdfs.server.datanode.DataNode:
> guomai021141:50010:DataXceiver error processing READ_BLOCK operation src:
> /10.11.2.188:54531 dst: /10.17.21.141:50010
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