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Re: WritableComparable - Hadoop - [mail # user]
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...Thanks for all the help on this issue. It turned out to be a very simple problem with my 'compareTo' implementation. The ordering was symmetric but _not_ transitive. stan O...
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Author: Stan Rosenberg,
2011-08-22, 15:53
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Re: WritableComparable - Hadoop - [mail # user]
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...On Tue, Aug 16, 2011 at 6:14 AM, Chris White wrote: Thanks for the tip. I am using a hash partitioner (its the default) but my hash value is not based on an enum value. In any c...
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Author: Stan Rosenberg,
2011-08-16, 14:20
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Re: WritableComparable - Hadoop - [mail # user]
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...On Sun, Aug 14, 2011 at 10:25 PM, Joey Echeverria wrote: The type of key1 is essentially a wrapper for java.util.UUID. Here is its readFields: public void readFields...
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Author: Stan Rosenberg,
2011-08-15, 02:39
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Re: WritableComparable - Hadoop - [mail # user]
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...On Sun, Aug 14, 2011 at 9:33 PM, Joey Echeverria wrote: Yes, but only the equality between enum values. Interestingly, when 'reduce' is called there are three instan...
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Author: Stan Rosenberg,
2011-08-15, 02:07
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WritableComparable - Hadoop - [mail # user]
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...Hi Folks, After much poking around I am still unable to determine why I am seeing 'reduce' being called twice with the "same" key. Recall from my previous email that "sameness" is dete...
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Author: Stan Rosenberg,
2011-08-15, 01:20
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WritableComparable and the case of duplicate keys in the reducer - Hadoop - [mail # user]
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...Hi All, Here is what's happening. I have implemented my own WritableComparable keys and values. Inside a reducer I am seeing 'reduce' being invoked with the "same" key _twi...
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Author: Stan Rosenberg,
2011-08-13, 15:14
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Re: Deserialization in ReduceContext - Hadoop - [mail # user]
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...On Thu, Aug 11, 2011 at 1:04 AM, Harsh J wrote: Many thanks!!...
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Author: Stan Rosenberg,
2011-08-13, 14:57
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Deserialization in ReduceContext - Hadoop - [mail # user]
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...Hi, Would someone please explain why ReduceContext.nextKeyValue() creates only a single instance of the deserializing class? This is a rather non-standard semantics for deserialization...
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Author: Stan Rosenberg,
2011-08-11, 03:45
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