[LENS-576] Cannot retrieve query results on lens server restart

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 2.4
• Assignee: Deepak Barr
• Reporter: Deepak Barr
• Created: 22/May/15 07:29
• Updated: 17/Nov/15 11:49
• Resolved: 25/Sep/15 08:10

Description

In the event of lens server restart, We can not obtain the query result by calling "/queryuiapi/queries/

{queryHandle}

/httpresultset" API as LensPersistentResult does not get created. This is because QueryOutputFormatter variable in QueryContext object is always null.This QueryOutputFormatter is important to create LensPersistedResultSet (see getResultset() method in QueryExecutionServiceImpl class) .

Reason : One can see that QueryOutputFormatter variable in QueryContext class is not serialized. Therefore, on server restart, this variable is always null in QueryContext for all queries.