我的测试代码：
public static void main(String [] args) throws HCatException {
String metastoreUrl = "thrift://<censored>:9083";
String databaseName = "default";
String tableName = "test";
WriteEntity.Builder builder = new WriteEntity.Builder();
WriteEntity entity = builder.withDatabase(databaseName).withTable(tableName).build();
HCatWriter writer = DataTransferFactory.getHCatWriter(entity, HCatalogUtils.createConfigurationMap(metastoreUrl));
HCatRecord record1 = new DefaultHCatRecord(2);
record1.set(0, 1);
record1.set(1, "first line");
List<HCatRecord> records = new ArrayList<HCatRecord>();
records.add(record1);
WriterContext context = writer.prepareWrite();
writer.write(records.iterator());
writer.commit(context);
}
当我运行它时，我得到一个异常：
Exception in thread "main" org.apache.hive.hcatalog.common.HCatException : 2004 : HCatOutputFormat not initialized, setOutput has to be called. Cause : org.apache.hive.hcatalog.common.HCatException : 2001 : Error setting output information. Cause : java.io.IOException: Failed on local exception: com.google.protobuf.InvalidProtocolBufferException: Protocol message contained an invalid tag (zero).; Host Details : local host is: "<censored>"; destination host is: "<censored>":8020;
at org.apache.hive.hcatalog.data.transfer.impl.HCatOutputFormatWriter.prepareWrite(HCatOutputFormatWriter.java:73)
at org.apache.hcatalog.data.MyDataTest.main(MyDataTest.java:42)
Caused by: org.apache.hive.hcatalog.common.HCatException : 2001 : Error setting output information. Cause : java.io.IOException: Failed on local exception: com.google.protobuf.InvalidProtocolBufferException: Protocol message contained an invalid tag (zero).; Host Details : local host is: "<censored>"; destination host is: "<censored>":8020;
at org.apache.hive.hcatalog.mapreduce.HCatOutputFormat.setOutput(HCatOutputFormat.java:205)
at org.apache.hive.hcatalog.mapreduce.HCatOutputFormat.setOutput(HCatOutputFormat.java:65)
at org.apache.hive.hcatalog.data.transfer.impl.HCatOutputFormatWriter.prepareWrite(HCatOutputFormatWriter.java:66)
... 1 more
Caused by: java.io.IOException: Failed on local exception: com.google.protobuf.InvalidProtocolBufferException: Protocol message contained an invalid tag (zero).; Host Details : local host is: "<censored>"; destination host is: "<censored>":8020;
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:764)
at org.apache.hadoop.ipc.Client.call(Client.java:1351)
at org.apache.hadoop.ipc.Client.call(Client.java:1300)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
at com.sun.proxy.$Proxy9.getFileInfo(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:186)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
at com.sun.proxy.$Proxy9.getFileInfo(Unknown Source)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getFileInfo(ClientNamenodeProtocolTranslatorPB.java:651)
at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:1724)
at org.apache.hadoop.hdfs.DistributedFileSystem$17.doCall(DistributedFileSystem.java:1106)
at org.apache.hadoop.hdfs.DistributedFileSystem$17.doCall(DistributedFileSystem.java:1102)
at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:82)
at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1102)
at org.apache.hive.hcatalog.mapreduce.HCatOutputFormat.setOutput(HCatOutputFormat.java:195)
... 3 more
Caused by: com.google.protobuf.InvalidProtocolBufferException: Protocol message contained an invalid tag (zero).
at com.google.protobuf.InvalidProtocolBufferException.invalidTag(InvalidProtocolBufferException.java:89)
at com.google.protobuf.CodedInputStream.readTag(CodedInputStream.java:108)
at org.apache.hadoop.ipc.protobuf.RpcHeaderProtos$RpcResponseHeaderProto.<init>(RpcHeaderProtos.java:1398)
at org.apache.hadoop.ipc.protobuf.RpcHeaderProtos$RpcResponseHeaderProto.<init>(RpcHeaderProtos.java:1362)
at org.apache.hadoop.ipc.protobuf.RpcHeaderProtos$RpcResponseHeaderProto$1.parsePartialFrom(RpcHeaderProtos.java:1492)
at org.apache.hadoop.ipc.protobuf.RpcHeaderProtos$RpcResponseHeaderProto$1.parsePartialFrom(RpcHeaderProtos.java:1487)
at com.google.protobuf.AbstractParser.parsePartialFrom(AbstractParser.java:200)
at com.google.protobuf.AbstractParser.parsePartialDelimitedFrom(AbstractParser.java:241)
at com.google.protobuf.AbstractParser.parseDelimitedFrom(AbstractParser.java:253)
at com.google.protobuf.AbstractParser.parseDelimitedFrom(AbstractParser.java:259)
at com.google.protobuf.AbstractParser.parseDelimitedFrom(AbstractParser.java:49)
at org.apache.hadoop.ipc.protobuf.RpcHeaderProtos$RpcResponseHeaderProto.parseDelimitedFrom(RpcHeaderProtos.java:2364)
at org.apache.hadoop.ipc.Client$Connection.receiveRpcResponse(Client.java:996)
at org.apache.hadoop.ipc.Client$Connection.run(Client.java:891)
任何可能有问题的建议或至少我应该尝试进一步调查的任何建议都将非常感激，我不知道如何从这个地方移开。