[ https://issues.apache.org/jira/browse/HBASE-11192?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ashish Singhi resolved HBASE-11192. ----------------------------------- Resolution: Duplicate Duplicate of HBASE-11191 > HBase ClusterId File Empty Check Loggic > --------------------------------------- > > Key: HBASE-11192 > URL: https://issues.apache.org/jira/browse/HBASE-11192 > Project: HBase > Issue Type: Bug > Environment: HBase 0.94+Hadoop2.2.0+Zookeeper3.4.5 > Reporter: sunjingtao > > if the clusterid file exists but empty ,then the following check logic in the > MasterFileSystem.java has none effects. > if (!FSUtils.checkClusterIdExists(fs, rd, c.getInt( > HConstants.THREAD_WAKE_FREQUENCY, 10 * 1000))) { > FSUtils.setClusterId(fs, rd, UUID.randomUUID().toString(), c.getInt( > HConstants.THREAD_WAKE_FREQUENCY, 10 * 1000)); > } > clusterId = FSUtils.getClusterId(fs, rd); > because the checkClusterIdExists method only check the path . > Path filePath = new Path(rootdir, HConstants.CLUSTER_ID_FILE_NAME); > return fs.exists(filePath); > in my case ,the file exists but is empty,so the readed clusterid is null > which cause a nullPointerException: > java.lang.NullPointerException > at org.apache.hadoop.hbase.util.Bytes.toBytes(Bytes.java:441) > at > org.apache.hadoop.hbase.zookeeper.ClusterId.setClusterId(ClusterId.java:72) > at > org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:581) > at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:433) > at java.lang.Thread.run(Thread.java:745) > is this a bug?please make sure! -- This message was sent by Atlassian JIRA (v6.3.4#6332)