[HDFS-4426] Secondary namenode shuts down immediately after startup - ASF JIRA

Log work

Agile Board

Rank to Top

Rank to Bottom

Attach files

Attach Screenshot

Bulk Copy Attachments

Bulk Move Attachments

Voters

Watch issue

Watchers

Create sub-task

Convert to sub-task

Move

Link

Clone

Labels

Update Comment Author

Replace String in Comment

Update Comment Visibility

Delete Comments

XML

Word

Printable

JSON

Details

Type: Bug
Status: Closed
Priority: Blocker
Resolution: Fixed
Affects Version/s: 2.0.3-alpha, 0.23.6
Fix Version/s: 2.0.3-alpha, 0.23.6, 0.23.7
Component/s: namenode
Labels:
None

Description

After ~~HADOOP-9181~~ went in, the secondary namenode immediately shuts down after it is started. From the startup logs:

2013-01-22 19:54:28,826 INFO  namenode.SecondaryNameNode (SecondaryNameNode.java:initialize(299)) - Checkpoint Period   :3600 secs (60 min)
2013-01-22 19:54:28,826 INFO  namenode.SecondaryNameNode (SecondaryNameNode.java:initialize(301)) - Log Size Trigger    :40000 txns
2013-01-22 19:54:28,845 INFO  namenode.SecondaryNameNode (StringUtils.java:run(616)) - SHUTDOWN_MSG: 
/************************************************************
SHUTDOWN_MSG: Shutting down SecondaryNameNode at xx
************************************************************/

I looked into the issue, and it's shutting down because SecondaryNameNode.main starts a bunch of daemon threads then returns. With nothing but daemon threads remaining, the JVM sees no reason to keep going and proceeds to shutdown. Apparently we were implicitly relying on the fact that the HttpServer QueuedThreadPool threads were not daemon threads to keep the secondary namenode process up.