hive关联hbase表,使用select count(*) from tablename报如下异常:
java.io.IOException: Cannot create an instance of InputSplit class = org.apache.hadoop.hive.hbase.HBaseSplit:org.apache.hadoop.hive.hbase.HBaseSplit
at org.apache.hadoop.hive.ql.io.HiveInputFormat$HiveInputSplit.readFields(HiveInputFormat.java:146)
at org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:67)
at org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:40)
at org.apache.hadoop.mapred.MapTask.getSplitDetails(MapTask.java:396)
at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:412)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:372)
at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
at org.apache.hadoop.mapred.Child.main(Child.java:249)
Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.hive.hbase.HBaseSplit
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:820)
at org.apache.hadoop.hive.ql.io.HiveInputFormat$HiveInputSplit.readFields(HiveInputFormat.java:143)
... 9 more
问题原因:
1.hive hive.aux.jars.path三个jar包不准确file:///形式
2.hbase hbase.zookeeper.quorum没有配置完整,按注释说根据HBASE_MANAGES_ZK来启用自带还是外部的zookeeper,测试证明HBASE_MANAGES_ZK设false时该配置也是起作用的,所有必须配全。
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