[CARBONDATA-2784] [SDK writer] Forever blocking wait with more than 20 batch of data, when consumer is dead due to data loading exception

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.4.1
• Assignee: Ajantha Bhat
• Reporter: Ajantha Bhat
• Created: 25/Jul/18 19:03
• Updated: 29/Jul/18 14:28
• Resolved: 29/Jul/18 14:26

Description

problem:

[SDK writer] Forever blocking wait with more than 21 batch of data, when consumer is dead due to data loading exception (bad record / out of memory)

 

root cause:

When the consumer is dead due to data loading exception, writer will be forcefully closed. but queue.clear() cleared only snapshot of entries (10 batches) and close is set to true after that. In between clear() and close = true, If more than 10 batches of data is again put into queue. For 11th batch, queue.put() goes for forever block as consumer is dead.

 

Solution:

set close = true, before clearing the queue. This will avoid adding more batches to queue from write().

 

Issue Links

• links to: GitHub Pull Request #2561