Greenplum Load error: Error Code 34077

When using Greenplum writer connection, I encountered an error: [ERROR] The Gpload process exited before pipe was opened.

how to resolve it?

A.  Modify $INFA_USER profile file

    1. comment all of Greenplum environment parameters

    2. source the greenplum_clients_path.sh and greenplum_loaders_path.sh which are shipped with client and loader packages.

B. Enable the environment parameters

    1. $INFA_HOME/tomcat/bin/infaservice.sh shutdown

    2. exit; su - $INFA_USER

    3. $INFA_HOME/tomcat/bin/infaservice.sh startup

    OR

    1.  exit; su - $INFA_USER

    2.  stop the repository and integreation services and then start them.

C.  Run workflow

you can see it's successful.