[HBASE-4835] ConcurrentModificationException out of ZKConfig.makeZKProps

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 0.92.0, 0.94.0
• Assignee: Unassigned
• Reporter: Andrew Kyle Purtell
• Created: 21/Nov/11 16:35
• Updated: 12/Jun/22 19:47
• Resolved: 11/Apr/15 01:26

Description

Mikhail reported this from a five-node, three-RS cluster test:

2011-11-21 01:30:15,188 FATAL org.apache.hadoop.hbase.regionserver.HRegionServer: ABORTING region server <machine_name>,60020,1321867814890: Initialization of RS failed. Hence aborting RS.
java.util.ConcurrentModificationException
at java.util.Hashtable$Enumerator.next(Hashtable.java:1031)
at org.apache.hadoop.conf.Configuration.iterator(Configuration.java:1042)
at org.apache.hadoop.hbase.zookeeper.ZKConfig.makeZKProps(ZKConfig.java:75)
at org.apache.hadoop.hbase.zookeeper.ZKConfig.getZKQuorumServersString(ZKConfig.java:245)
at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.<init>(ZooKeeperWatcher.java:144)
at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.<init>(ZooKeeperWatcher.java:124)
at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getZooKeeperWatcher(HConnectionManager.java:1262)
at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.setupZookeeperTrackers(HConnectionManager.java:568)
at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.<init>(HConnectionManager.java:559)
at org.apache.hadoop.hbase.client.HConnectionManager.getConnection(HConnectionManager.java:183)
at org.apache.hadoop.hbase.catalog.CatalogTracker.<init>(CatalogTracker.java:177)
at org.apache.hadoop.hbase.regionserver.HRegionServer.initializeZooKeeper(HRegionServer.java:575)
at org.apache.hadoop.hbase.regionserver.HRegionServer.preRegistrationInitialization(HRegionServer.java:534)
at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:642)
at java.lang.Thread.run(Thread.java:619)