[TEZ-1647] Issue with caching of events in VertexManager::onRootVertexInitialized

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.5.2
• Assignee: Jeff Zhang
• Reporter: Hitesh Shah
• Created: 08/Oct/14 23:31
• Updated: 08/Nov/14 20:25
• Resolved: 13/Oct/14 00:24

Description

Came across a use-case in Hive where the current functionality does not work.

Consider a vertex with 2 inputs ( i1, i2 ):

The custom vertex manager in Hive generates events only when both i1 and i2 are initialized.

Therefore vertexManagerPlugin::onRootInitialized(i1) does nothing but for vertexManagerPLugin::onRootIniitialized(i2) , it calls context.addEvents(i1) and context.addEvents(i2). When this happens, the events generated for i1 never get sent to the VertexImpl to be routed to the tasks.