[IMPALA-9748] Fix error reporting when AuxErrorInfoPB is present without an error

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: Backend
• Epic Color: ghx-label-10
• Assignee: Wenzhe Zhou
• Reporter: Sahil Takiar
• Created: 14/May/20 19:09
• Updated: 04/Sep/20 23:33

Description

As discussed in https://gerrit.cloudera.org/#/c/14824/24/be/src/runtime/query-driver.h@136, there is a bug in the error reporting path for query retries where it is possible for the error information set in TryQueryRetry is dropped. The impact is that the Status details (Status::AddDetail) set in TryQueryRetry won't get propagated to the client. This should only happen rarely, but it can only happen the ReportExecStatusRequestPB from a fragment contains a AuxErrorInfoPB entry, but no Status failure: https://gerrit.cloudera.org/#/c/14824/24/be/src/runtime/coordinator.cc@984