Hello, All
I changed Hadoop name node manually. Because I had some reason.
After that some region server down.
Error logs below
HBase version: 1.26
Hadoop version: 2.7.3
Caused by: org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot
create file ${hbase hdfs path}. Name node is in safe mode.
The reported blocks 7565873 has reached the threshold 1.0000 of total blocks
7565873. The number of live datanodes 390 has reached the minimum number 0. In
safe mode extension. Safe mode will be turned off automatically in 18 seconds.
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkNameNodeSafeMode(FSNamesystem.java:1335)
... 13 more
at org.apache.hadoop.ipc.Client.call(Client.java:1475)
at org.apache.hadoop.ipc.Client.call(Client.java:1412)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
at com.sun.proxy.$Proxy16.create(Unknown Source)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.create(ClientNamenodeProtocolTranslatorPB.java:296)
at sun.reflect.GeneratedMethodAccessor47.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
at com.sun.proxy.$Proxy17.create(Unknown Source)
at sun.reflect.GeneratedMethodAccessor47.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.hadoop.hbase.fs.HFileSystem$1.invoke(HFileSystem.java:279)
at com.sun.proxy.$Proxy18.create(Unknown Source)
at
org.apache.hadoop.hdfs.DFSOutputStream.newStreamForCreate(DFSOutputStream.java:1648)
at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1689)
at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1658)
at
org.apache.hadoop.hdfs.DistributedFileSystem$8.doCall(DistributedFileSystem.java:493)
at
org.apache.hadoop.hdfs.DistributedFileSystem$8.doCall(DistributedFileSystem.java:489)
at
org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at
org.apache.hadoop.hdfs.DistributedFileSystem.createNonRecursive(DistributedFileSystem.java:489)
at
org.apache.hadoop.fs.FileSystem.createNonRecursive(FileSystem.java:1115)
at
org.apache.hadoop.fs.FileSystem.createNonRecursive(FileSystem.java:1091)
at
org.apache.hadoop.hbase.regionserver.wal.ProtobufLogWriter.init(ProtobufLogWriter.java:90)
at
org.apache.hadoop.hbase.wal.DefaultWALProvider.createWriter(DefaultWALProvider.java:362)
at
org.apache.hadoop.hbase.regionserver.wal.FSHLog.createWriterInstance(FSHLog.java:734)
at
org.apache.hadoop.hbase.regionserver.wal.FSHLog.rollWriter(FSHLog.java:699)
at
org.apache.hadoop.hbase.regionserver.LogRoller.run(LogRoller.java:148)
at java.lang.Thread.run(Thread.java:748)
2018-04-18 13:55:02,600 FATAL [regionserver/${server host}.logRoller]
regionserver.LogRoller: Aborting
java.io.IOException: cannot get log writer
at
org.apache.hadoop.hbase.wal.DefaultWALProvider.createWriter(DefaultWALProvider.java:373)
at
org.apache.hadoop.hbase.regionserver.wal.FSHLog.createWriterInstance(FSHLog.java:734)
at
org.apache.hadoop.hbase.regionserver.wal.FSHLog.rollWriter(FSHLog.java:699)
at
org.apache.hadoop.hbase.regionserver.LogRoller.run(LogRoller.java:148)
at java.lang.Thread.run(Thread.java:748)
I add Hadoop configuration.
<property>
<name>dfs.client.retry.policy.enabled</name>
<value>true</value>
</property>
But It had no effect.
Best regards,
Minwoo Kang
