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add null check early to catch root cause

This commit is contained in:
nishantmonu51 2015-03-09 21:10:28 +05:30
parent c21086b6a8
commit 6e935cca0a
1 changed files with 3 additions and 0 deletions
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3
processing/src/main/java/io/druid/query/groupby/GroupByQueryHelper.java
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@ -138,6 +138,9 @@ public class GroupByQueryHelper
@Override @Override
public List accumulate(List accumulated, T in) public List accumulate(List accumulated, T in)
{ {
if(in == null){
throw new ISE("Cannot have null result");
}
accumulated.add(in); accumulated.add(in);
return accumulated; return accumulated;
} }