[HBASE-1129] Master won't go down; stuck joined on rootScanner

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.19.1, 0.20.0
• Assignee: Jim Kellerman
• Reporter: Michael Stack
• Created: 15/Jan/09 20:35
• Updated: 13/Sep/09 22:24
• Resolved: 24/Jan/09 01:43

Description

Here are the problem threads:

"RegionManager.rootScanner" daemon prio=10 tid=0x00000000404a4800 nid=0x4d57 runnable [0x0000000042014000..0x0000000042014a80]
   java.lang.Thread.State: RUNNABLE
    at org.apache.hadoop.hbase.Chore.run(Chore.java:58)

"HMaster" prio=10 tid=0x0000000040644800 nid=0x4d56 in Object.wait() [0x00000000415a4000..0x00000000415a4d00]
   java.lang.Thread.State: WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    - waiting on <0x00007fd8975d00c0> (a org.apache.hadoop.hbase.master.RootScanner)
    at java.lang.Thread.join(Thread.java:1143)
    - locked <0x00007fd8975d00c0> (a org.apache.hadoop.hbase.master.RootScanner)
    at java.lang.Thread.join(Thread.java:1196)
    at org.apache.hadoop.hbase.master.RegionManager.stop(RegionManager.java:481)
    at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:388)

Here is code at #58 in Chore:

  public void run() {
    try {
      while (!initialChore()) {
        this.sleeper.sleep();
      }
...

Looks like we sleep for ever.

Have to kill master.