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Tsuyoshi Ozawa commented on HADOOP-11361: ----------------------------------------- Cherrypicked this to branch-2.7 for HADOOP-12482. > Fix a race condition in MetricsSourceAdapter.updateJmxCache > ----------------------------------------------------------- > > Key: HADOOP-11361 > URL: https://issues.apache.org/jira/browse/HADOOP-11361 > Project: Hadoop Common > Issue Type: Bug > Affects Versions: 2.4.1, 2.5.1, 2.6.0 > Reporter: Brahma Reddy Battula > Assignee: Brahma Reddy Battula > Fix For: 2.8.0, 2.7.3 > > Attachments: HADOOP-111361-003.patch, HADOOP-11361-002.patch, > HADOOP-11361.patch, HDFS-7487.patch > > > {noformat} > Caused by: java.lang.NullPointerException > at > org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.updateAttrCache(MetricsSourceAdapter.java:247) > at > org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.updateJmxCache(MetricsSourceAdapter.java:177) > at > org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.getAttribute(MetricsSourceAdapter.java:102) > at > com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:647) > {noformat} -- This message was sent by Atlassian JIRA (v6.3.4#6332)