hadoop error handling

Number of reduce tasks is set to 0 since there's no reduce operator
java.net.UnknownHostException: backup.server: backup.server
    at java.net.InetAddress.getLocalHost(InetAddress.java:1496)
    at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:1000)
    at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:976)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:415)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1438)
    at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:976)
    at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:950)
    at org.apache.hadoop.hive.ql.exec.ExecDriver.execute(ExecDriver.java:448)
    at org.apache.hadoop.hive.ql.exec.MapRedTask.execute(MapRedTask.java:138)
    at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:138)
    at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:66)
    at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1383)
    at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1169)
    at org.apache.hadoop.hive.ql.Driver.run(Driver.java:982)
    at org.apache.hadoop.hive.ql.Driver.run(Driver.java:902)
    at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:259)
    at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:216)
    at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:412)
    at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:759)
    at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:613)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:208)
Caused by: java.net.UnknownHostException: backup.server
    at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
    at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:922)
    at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1316)
    at java.net.InetAddress.getLocalHost(InetAddress.java:1492)
    ... 25 more
Job Submission failed with exception 'java.net.UnknownHostException(backup.server: backup.server)'

 

 

The above error is reported, vi /etc/sysconfig/network host needs to be the same as /etc/hosts.

some error

mysql-connector-java-5.x.xxx.jar for MYSQL is missing,

安装过程中可能出现的问题及解决 

1.CREATE TABLE src(key INT, value STRING); 
FAILED: Error in metadata: MetaException(message:Got exception: org.apache.hadoop.ipc.RPC$VersionMismatch Protocol org.apache.hadoop.hdfs.protocol.ClientProtocol version 

mismatch. (client = 61, server = 63)) 
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask 

ERROR exec.Task: FAILED: Error in metadata: MetaException(message:Got exception: org.apache.hadoop.ipc.RPC$VersionMismatch Protocol 

org.apache.hadoop.hdfs.protocol.ClientProtocol version mismatch. (client = 61, server = 63)) 
org.apache.hadoop.hive.ql.metadata.HiveException: MetaException(message:Got exception: org.apache.hadoop.ipc.RPC$VersionMismatch Protocol 

org.apache.hadoop.hdfs.protocol.ClientProtocol version mismatch. (client = 61, server = 63)) 
        at org.apache.hadoop.hive.ql.metadata.Hive.createTable(Hive.java:544) 
        at org.apache.hadoop.hive.ql.exec.DDLTask.createTable(DDLTask.java:3313) 
        at org.apache.hadoop.hive.ql.exec.DDLTask.execute(DDLTask.java:242) 
        at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:134) 
        at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:57) 
        at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1312) 
        at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1104) 
        at org.apache.hadoop.hive.ql.Driver.run(Driver.java:937) 
        at shark.SharkCliDriver.processCmd(SharkCliDriver.scala:288) 
        at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:406) 
        at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver .java:341) 
        at shark.SharkCliDriver$.main(SharkCliDriver.scala:203) 
        at shark.SharkCliDriver.main(SharkCliDriver.scala) 
reason : The Hadoop version is inconsistent with SHARK's Hadoop core jar package version. 
Solution : Copy ${HADOOP_HOME}/hadoop-core-*.jar to ${SHARK_HOME}/lib_managed/jars/org.apache.hadoop/hadoop-core/ directory, rm the original hadoop-core-*. 
jar Enter Shark 

2. java.lang.NoClassDefFoundError 
/app/hadoop/shark/shark-0.7.0/lib_managed/jars/org.apache.hadoop/hadoop-core/ 
java.lang.NoClassDefFoundError: org/apache/hadoop/thirdparty/guava/common/collect/LinkedListMultimap 
        at org.apache.hadoop.hdfs.SocketCache.<init>(SocketCache.java:48) 
        at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:253) 
        at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:220) 
        at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:89) 
        at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1611) 
        at org.apache.hadoop.fs.FileSystem.access$300(FileSystem.java:68) 
        at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:1645) 
        at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1627) 
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:254) 
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:123) 
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:238) 
        at org.apache.hadoop.fs.Path.getFileSystem(Path.java:183) 
        at org.apache.hadoop.hive.metastore.Warehouse.getFs(Warehouse.java:104) 
        at org.apache.hadoop.hive.metastore.Warehouse.getDnsPath(Warehouse.java:136) 
        at org.apache.hadoop.hive.metastore.Warehouse.getWhRoot(Warehouse.java:151) 
        at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.getDefaultDatabasePath(HiveMetaStore.java:475)
        at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.createDefaultDB_core(HiveMetaStore.java:353)
        at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.createDefaultDB(HiveMetaStore.java:371) 
        at org. .hadoop.hive.metastore.HiveMetaStore$HMSHandler.init(HiveMetaStore.java:278) 
        at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.<init>(HiveMetaStore.java:248) 
        at org.apache.hadoop .hive.metastore.HiveMetaStoreClient.<init>(HiveMetaStoreClient.java:114) 
        at org.apache.hadoop.hive.ql.metadata.Hive.createMetaStoreClient(Hive.java:2092) 
        at org.apache.hadoop.hive.ql .metadata.Hive.getMSC(Hive.java:2102) 
        at org.apache.hadoop.hive.ql.metadata.Hive.createTable(Hive.java:538) 
        at org.apache.hadoop.hive.ql.exec.DDLTask.createTable(DDLTask.java:3313) 
        at org.apache.hadoop.hive.ql.exec.DDLTask.execute(DDLTask.java:242) 
        at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:134) 
        at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:57) 
        at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1312) 
        at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1104) 
        at org.apache.hadoop.hive.ql.Driver.run(Driver.java:937) 
        at shark.SharkCliDriver.processCmd(SharkCliDriver.scala:288) 
        at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:406) 
        at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:341) 
        at shark.SharkCliDriver$.main(SharkCliDriver.scala:203) 
        at shark.SharkCliDriver.main(SharkCliDriver.scala) 
Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.thirdparty.guava.common.collect.LinkedListMultimap 
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202) 
        at java.security.AccessController.doPrivileged(Native Method) 
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190) 
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307) 
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) 
        at java.lang.ClassLoader.loadClass(ClassLoader.java:248) 
        ... 36 more 
reason : CDH version is missing a third-party package guava-* .jar 
solution : create a directory ${SHARK_HOME}/lib_managed/jars/org.apache.hadoop/thirdparty, copy ${HADOOP_HOME}/lib/guava-r09-jarjar.jar to this directory 
and re-enter Shark 

3.show tables appears Problem 
Failed with exception java.io.IOException: java.io.IOException: Cannot create an instance of InputFormat class org.apache.hadoop.mapred.TextInputFormat as specified in 

mapredWork! 
reason : The
solution caused by missing hadoop-lzo-*.jar  : Create a directory ${SHARK_HOME}/lib_managed/jars/org.apache.hadoop/lib, copy ${HADOOP_HOME}/lib/hadoop-lzo-*.jar to this directory 
重新进入Shark 

4.SELECT count(1) FROM src_cached出现问题 
spark.SparkException: Job failed: ShuffleMapTask(6, 0) failed: ExceptionFailure(java.lang.NoSuchMethodError: sun.misc.Unsafe.copyMemory(Ljava/lang/Object;JLjava/lang/Object;JJ) 
V)at spark.scheduler.DAGScheduler

anonfun$abortStage$1.apply(DAGScheduler.scala:642)atspark.schedul and r . D A G S c h e du l e r _

anonfun$abortStage$1.apply(DAGScheduler.scala:640) 
        at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:60) 
        at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47) 
        at spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:640) 
        at spark.scheduler.DAGScheduler.handleTaskCompletion(DAGScheduler.scala:601) 
        at spark.scheduler.DAGScheduler.processEvent(DAGScheduler.scala:300) 
        at spark.scheduler.DAGScheduler.spark$scheduler$DAGScheduler

run(DAGScheduler.scala:364)atspark.scheduler.DAGScheduler

anon$1.run(DAGScheduler.scala:107) 
FAILED: Execution Error, return code -101 from shark.execution.SparkTask 

reason : java1.6 version is low, jdk7 needs to be installed. 
Solution : install jdk7, JAVA_HOME points to the new JDK7, the problem Solve 
tar xvfz jdk-7u25-linux-x64.tar.gz -C /usr/java/ 
export JAVA_HOME=/usr/java/jdk1.7.0_25 
export CLASSPATH=/usr/java/jdk1.7.0_25/lib 
re-enter Shark