Josh Elser created ACCUMULO-1846: ------------------------------------ Summary: Spurious ClassNotFoundException Key: ACCUMULO-1846 URL: https://issues.apache.org/jira/browse/ACCUMULO-1846 Project: Accumulo Issue Type: Bug Reporter: Josh Elser Fix For: 1.6.0
>From the monitor: {noformat} Failed to load class java.lang.ClassNotFoundException: org.apache.accumulo.master.recovery.HadoopLogCloser at org.apache.commons.vfs2.impl.VFSClassLoader.findClass(VFSClassLoader.java:175) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at org.apache.accumulo.start.classloader.vfs.AccumuloVFSClassLoader.loadClass(AccumuloVFSClassLoader.java:102) at org.apache.accumulo.core.conf.AccumuloConfiguration.instantiateClassProperty(AccumuloConfiguration.java:193) at org.apache.accumulo.master.recovery.RecoveryManager.recoverLogs(RecoveryManager.java:162) at org.apache.accumulo.master.TabletGroupWatcher.run(TabletGroupWatcher.java:195) {noformat} >From the master.debug.log: {noformat} 2013-11-01 23:07:26,557 [master.EventCoordinator] INFO : tablet !!R<< was loaded on localhost:9997 2013-11-01 23:07:26,567 [master.Master] DEBUG: Finished gathering information from 1 servers in 0.01 seconds 2013-11-01 23:07:26,568 [master.Master] DEBUG: not balancing because there are unhosted tablets 2013-11-01 23:07:26,636 [recovery.RecoveryManager] DEBUG: Recovering hdfs://localhost:8020/accumulo1.6/wal/localhost+9997/224c63ac-a7db-4ba6-be87-a6d1fd7a0921 to hdfs://localhost:8020/accumulo1.6/recovery/224c63ac-a7db-4ba6-be87-a6d1fd7a0921d to load class at org.apache.commons.vfs2.impl.VFSClassLoader.findClass(VFSClassLoader.java:175) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at org.apache.accumulo.start.classloader.vfs.AccumuloVFSClassLoader.loadClass(AccumuloVFSClassLoader.java:102) at org.apache.accumulo.core.conf.AccumuloConfiguration.instantiateClassProperty(AccumuloConfiguration.java:193) at org.apache.accumulo.master.recovery.RecoveryManager.recoverLogs(RecoveryManager.java:162) at org.apache.accumulo.master.TabletGroupWatcher.run(TabletGroupWatcher.java:195) 2013-11-01 23:07:26,645 [conf.AccumuloConfiguration] INFO : Using org.apache.accumulo.server.master.recovery.HadoopLogCloser 2013-11-01 23:07:26,645 [recovery.RecoveryManager] INFO : Starting recovery of hdfs://localhost:8020/accumulo1.6/wal/localhost+9997/224c63ac-a7db-4ba6-be87-a6d1fd7a0921 (in : 10s) created for hdfs:, tablet !0;~< holds a reference 2013-11-01 23:07:26,647 [master.Master] DEBUG: 1 assigned to dead servers: [!0<;~@(null,localhost:9997[142010edaa87210],null)]... {noformat} I think I was seeing this when I intentionally set the tserver's heap very small to force it to OOM during log recovery (to verify that WAL entries aren't prematurely deleted). -- This message was sent by Atlassian JIRA (v6.1#6144)