Hi all,
Something has changed in how OSX and java handles IPv6, and now you
will get a log like:
2012-07-31 18:21:39,824 INFO org.apache.hadoop.hbase.master.HMaster:
Server active/primary master; 0:0:0:0:0:0:0:0%0,
59736,1343784093521, sessionid=0x138dfc604160000, cluster-up flag was=false
2012-07-31 18:21:39,832 INFO
org.apache.hadoop.hbase.regionserver.MemStoreFlusher:
globalMemStoreLimit=397.6m, global
MemStoreLimitLowMark=347.9m, maxHeap=994.1m
2012-07-31 18:21:39,847 FATAL org.apache.hadoop.hbase.master.HMaster:
Master server abort: loaded coprocessors are: [
]
2012-07-31 18:21:39,847 INFO
org.apache.hadoop.hbase.regionserver.HRegionServer: Runs every 16mins,
40sec
2012-07-31 18:21:39,848 FATAL org.apache.hadoop.hbase.master.HMaster:
Unhandled exception. Starting shutdown.
java.util.UnknownFormatConversionException: Conversion = '0'
at java.util.Formatter.checkText(Formatter.java:2503)
at java.util.Formatter.parse(Formatter.java:2467)
at java.util.Formatter.format(Formatter.java:2414)
at java.util.Formatter.format(Formatter.java:2367)
at java.lang.String.format(String.java:2769)
at
com.google.common.util.concurrent.ThreadFactoryBuilder.setNameFormat(ThreadFactoryBuilder.java:68)
at
org.apache.hadoop.hbase.executor.ExecutorService$Executor.<init>(ExecutorService.java:299)
at
org.apache.hadoop.hbase.executor.ExecutorService.startExecutorService(ExecutorService.java:185)
at
org.apache.hadoop.hbase.executor.ExecutorService.startExecutorService(ExecutorService.java:227)
at
org.apache.hadoop.hbase.master.HMaster.startServiceThreads(HMaster.java:821)
at
org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:507)
at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:344)
at
org.apache.hadoop.hbase.master.HMasterCommandLine$LocalHMaster.run(HMasterCommandLine.java:220)
at java.lang.Thread.run(Thread.java:680)
2012-07-31 18:21:39,908 INFO org.apache.hadoop.hbase.master.HMaster: Aborting
As you can see, the hostname is now "0:0:0:0:0:0:0:0%0". The code
uses this as the prefix to a string, then that string is passed into a
formatter. Hence it is confused by %0, and aborts in a weird place
causing the entire thing to crash n burn.
As I see it there are several solutions:
- s/%/_/ for the hostname at some point
- attempt not to use ipv6
the latter seems hacky though, surely someone would want to support ipv6?
