@Override
  public boolean isRetriable() {
    return true;
    // Repl imports are replace-imports, and thus, are idempotent.
    // Note that this assumes that this ImportCommand is running on an export dump
    // created using EXPORT ... FOR REPLICATION. If the scope of ImportCommand
    // were to eventually expand to importing dumps created by regular exports,
    // then this needs updating.
  }
Trivial ctor to support Writable reflections instantiation
do not expect to use this object as-is, unless you call
readFields after using this ctor
hcatalog/webhcat/java-client/src/main/java/org/apache/hive/hcatalog/api/repl/commands/ImportCommand.java