执行hive的export命令:
export table dbname.customer_address to '/tmp/testuser/hiveexport/' ;
报错如下所示:
return code -101 from org.apache.hadoop.hive.ql.exec.copytask org/apache/hadoop/tools/distcpoptions
从上述报错,浏览社区没得到任何有价值的信息。通过查看hive的源码,也没有有效的信息。因此,我们需要查看hive的详细日志。
从hive的日志文件里面找到了以下内容:
报错如下(片段):
2019-03-14 15:25:41 INFO common.FileUtils: Source is 106566465 bytes. (MAX: 33554432)
2019-03-14 15:25:41 INFO common.FileUtils: Launch distributed copy (distcp) job.
2019-03-14 15:25:41 ERROR metadata.Hive: Failed to move: java.lang.NoClassDefFoundError: org/apache/hadoop/tools/DistCpOptions
Failed with exception java.lang.NoClassDefFoundError: org/apache/hadoop/tools/DistCpOptions
2019-03-14 15:25:41 ERROR exec.Task: Failed with exception java.lang.NoClassDefFoundError: org/apache/hadoop/tools/DistCpOptions
org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.NoClassDefFoundError: org/apache/hadoop/tools/DistCpOptions
at org.apache.hadoop.hive.ql.metadata.Hive.copyFiles(Hive.java:2895)
at org.apache.hadoop.hive.ql.metadata.Hive.copyFiles(Hive.java:3205)
at org.apache.hadoop.hive.ql.metadata.Hive.loadTable(Hive.java:1920)
at org.apache.hadoop.hive.ql.exec.MoveTask.execute(MoveTask.java:364)
at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:197)
at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:100)
at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:2084)
at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1755)
at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1463)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1181)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1171)
at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:233)
at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:184)
at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:403)
at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:336)
at org.apache.hadoop.hive.cli.CliDriver.processReader(CliDriver.java:474)
at org.apache.hadoop.hive.cli.CliDriver.processFile(CliDriver.java:490)
at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:793)
at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:759)
at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:686)
--------------------------------------------------------------------------
hive 最后移动数据的时候,需要调用hadoop-distcp-X.X.X.jar,
解决方法:只需要把$HADOOP_HOME/share/hadoop/tools/lib/hadoop-distcp-x.x.x.jar 拷贝到 $HIVE_HOME/lib下面,重启hive即可。
当然,如果hive表在HDFS上面存储的文件只要不超过33554432字节(也就是32M),就不需要使用到 org/apache/hadoop/tools/DistCpOptions 类,那么就不用把hadoop-distcp-x.x.x.jar 架包拷贝到hive的lib目录。这也是上面报错 “common.FileUtils: Source is 106566465 bytes. (MAX: 33554432)” 的原因所在。
原创声明:本文系作者授权腾讯云开发者社区发表,未经许可,不得转载。
如有侵权,请联系 cloudcommunity@tencent.com 删除。
原创声明:本文系作者授权腾讯云开发者社区发表,未经许可,不得转载。
如有侵权,请联系 cloudcommunity@tencent.com 删除。