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Editorial Team
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Asked: 2026-06-06T08:06:13+00:00

I am trying to run my hadoop map/reduce job inside eclipse (not a node

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I am trying to run my hadoop map/reduce job inside eclipse (not a node and or cluster) to debug my map/reduce logic. I want to able to put a break point on the mapper and reducer and make eclipse to stop on these break points however this is not happening and the things mapper get stuck. I noticed that if I hit suspend and run a couple of times, it will eventually break on the mapper and reducer. I am very new to eclipse. What am doing wrong?

I am literally running the word count code at http://wiki.apache.org/hadoop/WordCount and have break points on lines 22, 35.

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1 Answer

  1. Editorial Team

    Maybe you have disabled break points? The break points will be displayed with a strike through icon if that is the case.

    When not running locally it is possible that your break points will not be hit, because the tasks are run in new isolated JVMs. However that does not seem to be the case here, because suspend would not work either in that case.

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