[MAPREDUCE-5862] Line records longer than 2x split size aren't handled correctly - ASF JIRA

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Details

Type: Bug
Status: Closed
Priority: Critical
Resolution: Fixed
Affects Version/s: 2.3.0
Fix Version/s: 2.5.0
Component/s: None
Labels:
None

Hadoop Flags:

Reviewed

Description

Suppose this split (100-200) is in the middle of a record (90-240):

   0              100            200             300
   |---- split ----|---- curr ----|---- split ----|
                 <------- record ------->
                 90                     240

Currently, the first split would read the entire record, up to offset 240, which is good. But the 2nd split has a bug in producing a phantom record of (200, 240).