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} -- This message was sent by Atlassian JIRA (v7.6.14#76016)