DataNodeがdeadnodeになったときのjstack

gistfile1.txt

"org.apache.hadoop.hdfs.server.datanode.DataXceiver@2df8d003" daemon prio=10 tid=0x00002aaabc048000 nid=0x5996 waiting for monitor entry [0x0000000076726000]
   java.lang.Thread.State: BLOCKED (on object monitor)
        at org.apache.hadoop.hdfs.server.datanode.FSDataset.getVisibleLength(FSDataset.java:1040)
        - waiting to lock <0x00000000c238f170> (a org.apache.hadoop.hdfs.server.datanode.FSDataset)
        at org.apache.hadoop.hdfs.server.datanode.BlockSender.<init>(BlockSender.java:115)
        at org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:194)
        at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:104)
        at java.lang.Thread.run(Thread.java:724)
        
略

"org.apache.hadoop.hdfs.server.datanode.DataXceiver@7dee5279" daemon prio=10 tid=0x00002aaabc06e000 nid=0x7811 runnable [0x000000004e3a5000]
   java.lang.Thread.State: RUNNABLE
        at java.io.UnixFileSystem.createFileExclusively(Native Method)
        at java.io.File.createNewFile(File.java:1006)
        at org.apache.hadoop.hdfs.server.datanode.FSDataset$FSVolume.createTmpFile(FSDataset.java:483)
        at org.apache.hadoop.hdfs.server.datanode.FSDataset$FSVolume.createTmpFile(FSDataset.java:454)
        at org.apache.hadoop.hdfs.server.datanode.FSDataset.createTmpFile(FSDataset.java:1580)
        - locked <0x00000000c238f170> (a org.apache.hadoop.hdfs.server.datanode.FSDataset)
        at org.apache.hadoop.hdfs.server.datanode.FSDataset.writeToBlock(FSDataset.java:1467)
        - locked <0x00000000c238f170> (a org.apache.hadoop.hdfs.server.datanode.FSDataset)
        at org.apache.hadoop.hdfs.server.datanode.BlockReceiver.<init>(BlockReceiver.java:114)
        at org.apache.hadoop.hdfs.server.datanode.DataXceiver.writeBlock(DataXceiver.java:302)
        at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:112)
        at java.lang.Thread.run(Thread.java:724)