Thomas Graves created ARROW-9019: ------------------------------------ Summary: pyarrow hdfs fails to connect to for HDFS 3.x cluster Key: ARROW-9019 URL: https://issues.apache.org/jira/browse/ARROW-9019 Project: Apache Arrow Issue Type: Bug Reporter: Thomas Graves
I'm trying to use the pyarrow hdfs connector with Hadoop 3.1.3 and I get an error that looks like a protobuf or jar mismatch problem with Hadoop. The same code works on a Hadoop 2.9 cluster. I'm wondering if there is something special I need to do or if pyarrow doesn't support Hadoop 3.x yet? Note I tried with pyarrow 0.15.1, 0.16.0, and 0.17.1. import pyarrow as pa hdfs_kwargs = dict(host="namenodehost", port=9000, user="tgraves", driver='libhdfs', kerb_ticket=None, extra_conf=None) fs = pa.hdfs.connect(**hdfs_kwargs) res = fs.exists("/user/tgraves") Error that I get on Hadoop 3.x is: dfsExists: invokeMethod((Lorg/apache/hadoop/fs/Path;)Z) error: ClassCastException: org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$GetFileInfoRequestProto cannot be cast to org.apache.hadoop.shaded.com.google.protobuf.Messagejava.lang.ClassCastException: org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$GetFileInfoRequestProto cannot be cast to org.apache.hadoop.shaded.com.google.protobuf.Message at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:230) at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:118) at com.sun.proxy.$Proxy9.getFileInfo(Unknown Source) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getFileInfo(ClientNamenodeProtocolTranslatorPB.java:904) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:422) at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeMethod(RetryInvocationHandler.java:165) at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:157) at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95) at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:359) at com.sun.proxy.$Proxy10.getFileInfo(Unknown Source) at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:1661) at org.apache.hadoop.hdfs.DistributedFileSystem$29.doCall(DistributedFileSystem.java:1577) at org.apache.hadoop.hdfs.DistributedFileSystem$29.doCall(DistributedFileSystem.java:1574) at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81) at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1589) at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:1683) -- This message was sent by Atlassian Jira (v8.3.4#803005)