Hi all,
I got a tricky problem. I input a small file manually to do some filtering work
on each line in map function. I check if the line satisfy the constrain then I
output it, otherwise I return, without doing any other work below.
For the map function will be called on each line, I think the logic is correct.
But it doesn't work like this. If there are 5 line for a map task, and only the
2nd line satisfies the constrain, then the output will be line 2, 3, 4, and 5.
If the 3rd line satisfies, then output will be line 3, 4, 5. It seems that once
a map task meet the first satisfying line, the filter doesn't work for
following lines.
It is interesting problem. I am checking it now. I also hope someone could give
me some ideas on this. Thanks.
-Gang
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