casuallc created HBASE-22739:
--------------------------------
Summary: ArrayIndexOutOfBoundsException when balance
Key: HBASE-22739
URL: https://issues.apache.org/jira/browse/HBASE-22739
Project: HBase
Issue Type: Bug
Reporter: casuallc
Fix For: 2.1.1
{code:java}
2019-07-25 15:19:59,828 ERROR [master/nna:16000.Chore.1] hbase.ScheduledChore:
Caught error
java.lang.ArrayIndexOutOfBoundsException: 3171
at
org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer$Cluster.removeRegion(BaseLoadBalancer.java:873)
at
org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer$Cluster.doAction(BaseLoadBalancer.java:716)
at
org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.balanceCluster(StochasticLoadBalancer.java:407)
at
org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.balanceCluster(StochasticLoadBalancer.java:318)
at org.apache.hadoop.hbase.master.HMaster.balance(HMaster.java:1650)
at org.apache.hadoop.hbase.master.HMaster.balance(HMaster.java:1567)
at
org.apache.hadoop.hbase.master.balancer.BalancerChore.chore(BalancerChore.java:49)
at org.apache.hadoop.hbase.ScheduledChore.run(ScheduledChore.java:186)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at
org.apache.hadoop.hbase.JitterScheduledThreadPoolExecutorImpl$JitteredRunnableScheduledFuture.run(JitterScheduledThreadPoolExecutorImpl.java:111)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
{code}
should check if the regionIndex is valid when removeRegion,
java:
hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.java
{code:java}
int[] removeRegion(int[] regions, int regionIndex) {
//TODO: this maybe costly. Consider using linked lists
int[] newRegions = new int[regions.length - 1];
int i = 0;
for (i = 0; i < regions.length; i++) {
if (i == regions.length - 1) {
return Arrays.copyOf(regions, regions.length);
}
if (regions[i] == regionIndex) {
break;
}
newRegions[i] = regions[i];
}
System.arraycopy(regions, i+1, newRegions, i, newRegions.length - i);
return newRegions;
}
{code}
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