[SQOOP-1602] Sqoop2: Fix the current balancing across Loaders internal to Sqoop

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Invalid
• Fix Version/s: 1.99.5
• Assignee: Qian Xu
• Reporter: Veena Basavaraj
• Created: 22/Oct/14 17:12
• Updated: 28/Dec/14 03:56
• Resolved: 26/Dec/14 08:03

Description

The balancing of the record to the loaders in done internally in SQOOP today

While writing the Kite Connector Qian noticed that this is not done fairly.

While I am testing kite connector, I allocated 2 loaders. I thought data will be divided by 50% and 50% to both loaders. But actually the second loader does nothing, because its DataReader does not have any data to provide. Is it by design?

>> About loaders do not have data in a balanced way.
My scenario is 4 "jdbc_mysql" extractors to extract 100k row data (10MB). There are 2 Kite loaders to read data.

This must be a bug that needs to be fixed in SQOOP ( abec confirmed it.

Issue Links

• is cloned by: SQOOP-1603 Sqoop2: Explicit support for Merge in the Sqoop Job lifecyle in the MR engine
• relates to: SQOOP-1938 DOC:update the sqoop MR engine implementation details