Gang Li created HADOOP-9753:
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Summary: wrong offset for the first record in index file created
by fix function in MapFile
Key: HADOOP-9753
URL: https://issues.apache.org/jira/browse/HADOOP-9753
Project: Hadoop Common
Issue Type: Bug
Components: io
Affects Versions: 1.0.4
Environment: ubuntu 12.04
jdk 7.0
hadoop-1.0.4
Reporter: Gang Li
I want to convert a sequence file into a map file. So i used the fix function
provided by MapFile to create the index file. Also i set the indexInterval as 1
since i want to index each record in the data file. However, i found that the
position of the first record in the data file was incorrectly indexed by the
index file. And it turns out that the fix function sets the position of the
first record as 0. This is wrong because the reader of the data sequence file
has already read the head and the position should be the length of the head.
So, i tried to set the position as the correct value and it now works.
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