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我们有一小排Greenplum集群。我们安装了Hadoop。并尝试使用GPHDFS协议访问外部表。选择不适用于外部表格的查询
ENV
- GPDB VERSION 4.3.10
- HDP VERSION 2.3.6
- Java版本1.8 acroos主/段
获取错误
prod=# select count (*) from schemaname.filename;
ERROR: external table gphdfs protocol command ended with error. Error: A JNI error has occurred, please check your installation and try again (seg1 slice1 datanaodehostname:40001 pid=8221)
DETAIL:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/mapreduce/TaskAttemptContext
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
at java.lang.Class.getMethod0(Class.java:3018)
at java.lang.Class.getMethod(Class.java:1784)
at sun.launcher.LauncherHelper.validateMain
Command: 'gphdfs://hadoop/file/path?profile=HdfsTextSimple'
External table ext_tableneme, file gphdfs://hadoop/file/path?profile=HdfsTextSimple
任何帮助,将不胜感激?
gphdfs在pxf中没有类似“profile = HdfsTextSimple”的语法。请参阅pivotal –
中的gphdfs文档对不起,这是我的错误,我在此处添加了hawq pxf配置文件,我删除了配置文件= HdfsTextSimple。它仍然给出同样的错误。 – vs0731