[C++] HadoopFileSystem open_append_stream throwing an error if file does not exists

as per the document method, open_append_stream will create the file if does not exists. But when I try to append to the file in hdfs it is throwing an error like file, not found.

hdfsOpenFile(/tmp/xyz.json): FileSystem#append((Lorg/apache/hadoop/fs/Path;)Lorg/apache/hadoop/fs/FSDataOutputStream;) error:
RemoteException: Failed to append to non-existent file /tmp/xyz.json for client
        at org.apache.hadoop.hdfs.server.namenode.FSDirAppendOp.appendFile(FSDirAppendOp.java:104)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.appendFile(FSNamesystem.java:2639)
        at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.append(NameNodeRpcServer.java:805)
        at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.append(ClientNamenodeProtocolServerSideTranslatorPB.java:487)
        at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:524)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1025)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:876)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:822)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2682)
java.io.FileNotFoundException: Failed to append to non-existent file /tmp/xyz.json for client x.x.x.x
        at org.apache.hadoop.hdfs.server.namenode.FSDirAppendOp.appendFile(FSDirAppendOp.java:104)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.appendFile(FSNamesystem.java:2639)
        at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.append(NameNodeRpcServer.java:805)
        at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.append(ClientNamenodeProtocolServerSideTranslatorPB.java:487)
        at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:524)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1025)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:876)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:822)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2682)

        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:121)
        at org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:88)
        at org.apache.hadoop.hdfs.DFSClient.callAppend(DFSClient.java:1367)
        at org.apache.hadoop.hdfs.DFSClient.append(DFSClient.java:1424)
        at org.apache.hadoop.hdfs.DFSClient.append(DFSClient.java:1394)
        at org.apache.hadoop.hdfs.DistributedFileSystem$5.doCall(DistributedFileSystem.java:423)
        at org.apache.hadoop.hdfs.DistributedFileSystem$5.doCall(DistributedFileSystem.java:419)
        at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
        at org.apache.hadoop.hdfs.DistributedFileSystem.append(DistributedFileSystem.java:431)
        at org.apache.hadoop.hdfs.DistributedFileSystem.append(DistributedFileSystem.java:400)
        at org.apache.hadoop.fs.FileSystem.append(FileSystem.java:1386)
Caused by: org.apache.hadoop.ipc.RemoteException(java.io.FileNotFoundException): Failed to append to non-existent file /tmp/xyz.json for client 10.128.8.11
        at org.apache.hadoop.hdfs.server.namenode.FSDirAppendOp.appendFile(FSDirAppendOp.java:104)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.appendFile(FSNamesystem.java:2639)
        at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.append(NameNodeRpcServer.java:805)
        at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.append(ClientNamenodeProtocolServerSideTranslatorPB.java:487)
        at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:524)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1025)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:876)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:822)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2682)

        at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1562)
        at org.apache.hadoop.ipc.Client.call(Client.java:1508)
        at org.apache.hadoop.ipc.Client.call(Client.java:1405)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:233)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:118)
        at com.sun.proxy.$Proxy9.append(Unknown Source)
        at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.append(ClientNamenodeProtocolTranslatorPB.java:403)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:422)
        at org.apache.hadoop.io.retry.RetryInvocationHandler$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.append(Unknown Source)
        at org.apache.hadoop.hdfs.DFSClient.callAppend(DFSClient.java:1333)
        at org.apache.hadoop.hdfs.DFSClient.callAppend(DFSClient.java:1355)
        ... 8 more
Traceback (most recent call last):
  File "", line 1, in
  File "pyarrow/_fs.pyx", line 738, in pyarrow._fs.FileSystem.open_append_stream
  File "pyarrow/error.pxi", line 144, in pyarrow.lib.pyarrow_internal_check_status
  File "pyarrow/error.pxi", line 113, in pyarrow.lib.check_status
FileNotFoundError: [Errno 2] Opening HDFS file '/tmp/xyz.json' failed. Detail: [errno 2] No such file or directory

**Reporter**: [Sagar Shinde](https://issues.apache.org/jira/browse/ARROW-17136)

_{**Note**: *This issue was originally created as [ARROW-17136](https://issues.apache.org/jira/browse/ARROW-17136). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*}

Start at the FileSystem.open_append_stream entry point shown in pyarrow/_fs.pyx and trace the HDFS implementation that handles /tmp/xyz.json. Reproduce the missing-file case against HDFS and compare the observed behavior with the documented create-if-missing behavior; done means the operation follows that contract or the discrepancy is documented.

Written by the indexing model from the issue text.