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zjffdu
Shanghai, China
zjffdu.blogspot.com
Age: 31
Commiter of Pig at The Apache Software Foundation
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Top Questions
32
votes
Why java Arrays use two different sort algorithms for different types?
java
algorithm
asked Sep 14 '10 at 8:23
stackoverflow.com
18
votes
java.lang.OutOfMemoryError: Java heap space in Maven
java
maven
outofmemoryexception
asked Nov 1 '10 at 3:06
stackoverflow.com
18
votes
Confused by the operator definitions of Int in Scala
scala
asked Jan 7 '12 at 5:59
stackoverflow.com
15
votes
Could anyone tell me what's the difference between KD-tree and R-tree
data-structures
kdtree
r-tree
asked Dec 1 '10 at 16:08
stackoverflow.com
12
votes
Why this type of implicit conversion is illegal?
scala
implicit-conversion
asked Jan 30 '12 at 7:50
stackoverflow.com
9
votes
What is the geometric meaning of singular matrix
linear-algebra
matrices
asked Jul 3 '12 at 6:49
math.stackexchange.com
8
votes
Is there any way or tool that I can use to verify whether my API is thread safe in Java?
java
multithreading
concurrency
thread-safety
asked Oct 5 '10 at 12:47
stackoverflow.com
8
votes
How to update a table from a another table
oracle
sql
asked May 30 '11 at 3:09
dba.stackexchange.com
6
votes
What does a “?” symbol (question mark) mean in Scala?
scala
syntax
asked Apr 6 '12 at 6:57
stackoverflow.com
5
votes
Weird problem using JUnit in multi-thread environment
java
multithreading
junit
asked Oct 28 '10 at 4:53
stackoverflow.com
1
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Top Answers
15
Run Hadoop job without using JobConf
stackoverflow.com
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