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https://issues.apache.org/jira/browse/PIG-5211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15961941#comment-15961941
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Daniel Dai commented on PIG-5211:
---------------------------------
There are still two Java 1.8 only code, error message when compiling with Java
1.7:
{code}
[javac]
/Users/daijy/pig2/src/org/apache/pig/data/LimitedSortedDataBag.java:61: error:
no suitable constructor found for PriorityQueue(Comparator<Tuple>)
[javac] this.priorityQ = new
PriorityQueue<Tuple>(getReversedComparator(mComp));
[javac]
/Users/daijy/pig2/src/org/apache/pig/data/LimitedSortedDataBag.java:281: error:
local variable comp is accessed from within inner class; needs to be declared
final
[javac] return -comp.compare(o1, o2);
{code}
> Optimize Nested Limited Sort
> ----------------------------
>
> Key: PIG-5211
> URL: https://issues.apache.org/jira/browse/PIG-5211
> Project: Pig
> Issue Type: Improvement
> Reporter: Jin Sun
> Assignee: Jin Sun
> Fix For: 0.17.0
>
> Attachments: PIG-5211-1.patch, PIG-5211-2.patch, PIG-5211-3.patch
>
>
> Currently in FOREACH clause, if both LIMIT and ORDER BY are present, pig
> stores all elements and sort them. It should use a priority queue to be more
> efficient in space.
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