Hello! 

This is an error message:

Error on node [78acb39a786b9532bb82a9f8a43baeec] com.pega.dsm.dnode.api.dataflow.StageException: Exception in stage: Customers at com.pega.dsm.dnode.api.dataflow.DataFlowStage$StageOutputSubscriber.onError(DataFlowStage.java:394) at com.pega.dsm.dnode.api.dataflow.DataFlowStage$StageInputSubscriber.onError(DataFlowStage.java:286) at com.pega.dsm.dnode.impl.stream.DataObservableImpl$SafeDataSubscriber.onError(DataObservableImpl.java:287) at com.pega.dsm.dnode.impl.stream.DataObservableImpl$SafeDataSubscriber.subscribe(DataObservableImpl.java:325) at com.pega.dsm.dnode.impl.stream.DataObservableImpl.subscribe(DataObservableImpl.java:52) at com.pega.dsm.dnode.api.dataflow.DataFlow$2.run(DataFlow.java:269) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at com.pega.dsm.dnode.impl.prpc.PrpcThreadFactory$PrpcThread.run(PrpcThreadFactory.java:81) Caused by: java.io.IOException: Operation category READ is not supported in state standby. Visit https://s.apache.org/sbnn-error at org.apache.hadoop.hdfs.server.namenode.ha.StandbyState.checkOperation(StandbyState.java:88) at org.apache.hadoop.hdfs.server.namenode.NameNode$NameNodeHAContext.checkOperation(NameNode.java:1826) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkOperation(FSNamesystem.java:1404) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getStats(NameNodeRpcServer.java:914) at org.apache.hadoop.hdfs.server.namenode.AuthorizationProviderProxyClientProtocol.getStats(AuthorizationProviderProxyClientProtocol.java:378) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getFsStats(ClientNamenodeProtocolServerSideTranslatorPB.java:668) at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:617) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1073) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2086) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2082) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1693) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2080) at com.pega.bigdata.dataset.hdfs.HDFSFileClient.throwFSInitializationException(HDFSFileClient.java:561) at com.pega.bigdata.dataset.hdfs.HDFSFileClient.setupAndCacheFS(HDFSFileClient.java:546) at com.pega.bigdata.dataset.hdfs.HDFSFileClient.setupAndCacheFS(HDFSFileClient.java:544) at com.pega.bigdata.dataset.hdfs.HDFSFileClient.setupAndCacheFS(HDFSFileClient.java:544) at com.pega.bigdata.dataset.hdfs.HDFSFileClient.setupAndCacheFS(HDFSFileClient.java:544) at com.pega.bigdata.dataset.hdfs.HDFSFileClient.setupAndCacheFS(HDFSFileClient.java:507) at com.pega.bigdata.dataset.hdfs.HDFSFileClient.access$700(HDFSFileClient.java:64) at com.pega.bigdata.dataset.hdfs.HDFSFileClient$3.run(HDFSFileClient.java:484) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628) at com.pega.bigdata.dataset.hdfs.HDFSFileClient.performOnInitializedFileSystem(HDFSFileClient.java:481) at com.pega.bigdata.dataset.hdfs.HDFSFileClient.performOperation(HDFSFileClient.java:442) at com.pega.bigdata.dataset.hdfs.HDFSFileClient.getRows(HDFSFileClient.java:1303) at com.pega.bigdata.dataset.hdfs.HDFSBrowseByPartitionOperation$1.emit(HDFSBrowseByPartitionOperation.java:60) at com.pega.dsm.dnode.impl.stream.DataObservableImpl$SafeDataSubscriber.subscribe(DataObservableImpl.java:320) ... 5 more 

But my question was in general does Pega can load csv file from hadoop if hadoop has HA which include node changes.

Thank you!