[HBASE-25540] ArrayIndexOutOfBoundsException thrown when table CF name is "#"

• Type: Bug
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Fix Version/s: 3.0.0-beta-2
• Component/s: metrics
• Assignee: Pankaj Kumar
• Reporter: Pankaj Kumar
• Created: 01/Feb/21 07:40
• Updated: 16/Dec/23 14:18

Description

ArrayIndexOutOfBoundsException will be thrown when CF name is "#",

https://github.com/apache/hbase/blob/a04ea7ea4493f5bc583b4d08a2a6a88e7c6b8c54/hbase-hadoop-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsTableSourceImpl.java#L340

2021-01-30 00:11:14,172 | ERROR | HBase-Metrics2-1 | Error getting metrics from source RegionServer,sub=Tables | org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.getMetrics(MetricsSourceAdapter.java:202)
java.lang.ArrayIndexOutOfBoundsException: 1
        at org.apache.hadoop.hbase.regionserver.MetricsTableSourceImpl.addGauge(MetricsTableSourceImpl.java:336)
        at org.apache.hadoop.hbase.regionserver.MetricsTableSourceImpl.snapshot(MetricsTableSourceImpl.java:321)
        at org.apache.hadoop.hbase.regionserver.MetricsTableAggregateSourceImpl.getMetrics(MetricsTableAggregateSourceImpl.java:98)
        at org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.getMetrics(MetricsSourceAdapter.java:200)
        at org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.updateJmxCache(MetricsSourceAdapter.java:183)
        at org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.getMBeanInfo(MetricsSourceAdapter.java:156)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getNewMBeanClassName(DefaultMBeanServerInterceptor.java:333)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:319)
        at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522)
        at org.apache.hadoop.metrics2.util.MBeans.register(MBeans.java:67)
        at org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.startMBeans(MetricsSourceAdapter.java:222)
        at org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.start(MetricsSourceAdapter.java:101)
        at org.apache.hadoop.metrics2.impl.MetricsSystemImpl.registerSource(MetricsSystemImpl.java:268)
        at org.apache.hadoop.metrics2.impl.MetricsSystemImpl$1.postStart(MetricsSystemImpl.java:239)
        at sun.reflect.GeneratedMethodAccessor31.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.hadoop.metrics2.impl.MetricsSystemImpl$3.invoke(MetricsSystemImpl.java:324)
        at com.sun.proxy.$Proxy7.postStart(Unknown Source)
        at org.apache.hadoop.metrics2.impl.MetricsSystemImpl.start(MetricsSystemImpl.java:193)
        at org.apache.hadoop.metrics2.impl.JmxCacheBuster$JmxCacheBusterRunnable.run(JmxCacheBuster.java:109)

Issue Links

• is related to: HBASE-24205 Create metric to know the number of reads that happens from memstore
• links to: GitHub Pull Request #3005