[MAPREDUCE-5491] DFSIO do not initialize write buffer correctly

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Component/s: benchmarks, test
• Labels: BB2015-05-TBR
• Assignee: Raymond Liu
• Reporter: Raymond Liu
• Created: 03/Sep/13 02:10
• Updated: 06/May/15 03:27

Description

In DFSIO test, the IOMapperBase will set bufferSize in configure method, while writeMapper, appendMapper etc use bufferSize to initialize buffer in the constructor. This will lead to buffer not initialized at all. It is ok for non compression route, while compression is used, the output data size will be very small due to all 0 in buffer.

Thus, the overrided configure method should be be the correct place for initial buffer

Issue Links

• is related to: MAPREDUCE-5125 TestDFSIO should write less compressible data