[HDFS-12757] DeadLock Happened Between DFSOutputStream and LeaseRenewer when LeaseRenewer#renew SocketTimeException

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Component/s: hdfs-client
• Assignee: Unassigned
• Reporter: Jiandan Yang
• Created: 02/Nov/17 10:24
• Updated: 03/Nov/17 02:53
• Resolved: 03/Nov/17 02:45

Description

Java stack is :

Found one Java-level deadlock:
=============================
"Topology-2 (735/2000)":
  waiting to lock monitor 0x00007fff4523e6e8 (object 0x00000005d3521078, a org.apache.hadoop.hdfs.client.impl.LeaseRenewer),
  which is held by "LeaseRenewer:admin@na61storage"
"LeaseRenewer:admin@na61storage":
  waiting to lock monitor 0x00007fff5d41e838 (object 0x00000005ec0dfa88, a org.apache.hadoop.hdfs.DFSOutputStream),
  which is held by "Topology-2 (735/2000)"

Java stack information for the threads listed above:
===================================================
"Topology-2 (735/2000)":
        at org.apache.hadoop.hdfs.client.impl.LeaseRenewer.addClient(LeaseRenewer.java:227)
        - waiting to lock <0x00000005d3521078> (a org.apache.hadoop.hdfs.client.impl.LeaseRenewer)
        at org.apache.hadoop.hdfs.client.impl.LeaseRenewer.getInstance(LeaseRenewer.java:86)
        at org.apache.hadoop.hdfs.DFSClient.getLeaseRenewer(DFSClient.java:467)
        at org.apache.hadoop.hdfs.DFSClient.endFileLease(DFSClient.java:479)
        at org.apache.hadoop.hdfs.DFSOutputStream.setClosed(DFSOutputStream.java:776)
        at org.apache.hadoop.hdfs.DFSOutputStream.closeThreads(DFSOutputStream.java:791)
        at org.apache.hadoop.hdfs.DFSOutputStream.closeImpl(DFSOutputStream.java:848)
        - locked <0x00000005ec0dfa88> (a org.apache.hadoop.hdfs.DFSOutputStream)
        at org.apache.hadoop.hdfs.DFSOutputStream.close(DFSOutputStream.java:805)
        - locked <0x00000005ec0dfa88> (a org.apache.hadoop.hdfs.DFSOutputStream)
        at org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:72)
        at org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:106)
......
"LeaseRenewer:admin@na61storage":
        at org.apache.hadoop.hdfs.DFSOutputStream.abort(DFSOutputStream.java:750)
        - waiting to lock <0x00000005ec0dfa88> (a org.apache.hadoop.hdfs.DFSOutputStream)
        at org.apache.hadoop.hdfs.DFSClient.closeAllFilesBeingWritten(DFSClient.java:586)
        at org.apache.hadoop.hdfs.client.impl.LeaseRenewer.run(LeaseRenewer.java:453)
        - locked <0x00000005d3521078> (a org.apache.hadoop.hdfs.client.impl.LeaseRenewer)
        at org.apache.hadoop.hdfs.client.impl.LeaseRenewer.access$700(LeaseRenewer.java:76)
        at org.apache.hadoop.hdfs.client.impl.LeaseRenewer$1.run(LeaseRenewer.java:310)
        at java.lang.Thread.run(Thread.java:834)

Found 1 deadlock.

Issue Links

• is duplicated by: HDFS-12754 Lease renewal can hit a deadlock