Ted Yu created HBASE-14885:
------------------------------
Summary: NullPointerException in HMaster#normalizeRegions() due to
missing TableDescriptor
Key: HBASE-14885
URL: https://issues.apache.org/jira/browse/HBASE-14885
Project: HBase
Issue Type: Bug
Affects Versions: 1.3.0
Reporter: Ted Yu
Assignee: Ted Yu
During system test on Windows, we observed the following in master log:
{code}
2015-11-23 11:31:38,853 ERROR
org.apache.hadoop.hbase.master.normalizer.RegionNormalizerChore: Caught error^M
java.lang.NullPointerException^M
at
org.apache.hadoop.hbase.master.HMaster.normalizeRegions(HMaster.java:1396)^M
at
org.apache.hadoop.hbase.master.normalizer.RegionNormalizerChore.chore(RegionNormalizerChore.java:49)^M
at org.apache.hadoop.hbase.ScheduledChore.run(ScheduledChore.java:185)^M
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)^M
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)^M
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)^M
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)^M
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)^M
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)^M
at java.lang.Thread.run(Thread.java:745)^M
{code}
The NullPointerException came from the second line below:
{code}
for(TableName table : allEnabledTables) {
if (table.isSystemTable() ||
!getTableDescriptors().get(table).isNormalizationEnabled()) {
{code}
It seems TableDescriptor for some table was absent.
normalizeRegions() should deal with such scenario without producing NPE.
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