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https://issues.apache.org/jira/browse/DRILL-5601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16086613#comment-16086613
]
ASF GitHub Bot commented on DRILL-5601:
---------------------------------------
Github user Ben-Zvi commented on a diff in the pull request:
https://github.com/apache/drill/pull/860#discussion_r127358527
--- Diff:
exec/vector/src/main/java/org/apache/drill/exec/vector/AllocationHelper.java ---
@@ -26,14 +26,16 @@ public static void allocate(ValueVector v, int
valueCount, int bytesPerValue) {
allocate(v, valueCount, bytesPerValue, 5);
}
- public static void allocatePrecomputedChildCount(ValueVector v, int
valueCount, int bytesPerValue, int childValCount){
- if(v instanceof FixedWidthVector) {
+ public static void allocatePrecomputedChildCount(ValueVector v, int
valueCount, int bytesPerValue, int childValCount) {
--- End diff --
Discouraged: single letter parameter/field names. Even **"vv"** would be
easier to search, if needed.
> Rollup of External Sort memory management fixes
> -----------------------------------------------
>
> Key: DRILL-5601
> URL: https://issues.apache.org/jira/browse/DRILL-5601
> Project: Apache Drill
> Issue Type: Task
> Affects Versions: 1.11.0
> Reporter: Paul Rogers
> Assignee: Paul Rogers
> Fix For: 1.12.0
>
>
> Rollup of a set of specific JIRA entries that all relate to the very
> difficult problem of managing memory within Drill in order for the external
> sort to stay within a memory budget. In general, the fixes relate to better
> estimating memory used by the three ways that Drill allocates vector memory
> (see DRILL-5522) and to predicting the size of vectors that the sort will
> create, to avoid repeated realloc-copy cycles (see DRILL-5594).
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