请帮助我理解/解决此异常。我正在尝试使用sqoop-1.4.5将表从Oracle导入HDFS。
我正在使用此命令导入：
sqoop import --connect jdbc:oracle:thin:system/system@<IP address>:1521:xe --username <username> -P--table <database name>.<table name> --columns "<column names>" --target-dir <target directory path> -m 1
生成例外：
Exception in thread "main" java.lang.VerifyError: Bad type on operand stack
Exception Details:
Location:
org/apache/hadoop/mapred/JobTrackerInstrumentation.create(Lorg/apache/hadoop/mapred/JobTracker;Lorg/apache/hadoop/mapred/JobConf;)Lorg/apache/hadoop/mapred/JobTrackerInstrumentation; @5: invokestatic
Reason:
Type 'org/apache/hadoop/metrics2/lib/DefaultMetricsSystem' (current frame, stack[2]) is not assignable to 'org/apache/hadoop/metrics2/MetricsSystem'
Current Frame:
bci: @5
flags: { }
locals: { 'org/apache/hadoop/mapred/JobTracker', 'org/apache/hadoop/mapred/JobConf' }
stack: { 'org/apache/hadoop/mapred/JobTracker', 'org/apache/hadoop/mapred/JobConf', 'org/apache/hadoop/metrics2/lib/DefaultMetricsSystem' }
Bytecode:
0000000: 2a2b b200 03b8 0004 b0
at org.apache.hadoop.mapred.LocalJobRunner.<init>(LocalJobRunner.java:420)
at org.apache.hadoop.mapred.JobClient.init(JobClient.java:472)
at org.apache.hadoop.mapred.JobClient.<init>(JobClient.java:457)
at org.apache.hadoop.mapreduce.Job$1.run(Job.java:513)
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:1628)
at org.apache.hadoop.mapreduce.Job.connect(Job.java:511)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:499)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:530)
at org.apache.sqoop.mapreduce.ImportJobBase.doSubmitJob(ImportJobBase.java:186)
at org.apache.sqoop.mapreduce.ImportJobBase.runJob(ImportJobBase.java:159)
at org.apache.sqoop.mapreduce.ImportJobBase.runImport(ImportJobBase.java:247)
at org.apache.sqoop.manager.SqlManager.importTable(SqlManager.java:665)
at org.apache.sqoop.manager.OracleManager.importTable(OracleManager.java:444)
at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:497)
at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:601)
at org.apache.sqoop.Sqoop.run(Sqoop.java:143)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:179)
at org.apache.sqoop.Sqoop.runTool(Sqoop.java:218)
at org.apache.sqoop.Sqoop.runTool(Sqoop.java:227)
at org.apache.sqoop.Sqoop.main(Sqoop.java:236)