[GitHub] [drill] arina-ielchiieva commented on a change in pull request #2047: DRILL-7675: Work around for partitions sender memory use

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arina-ielchiieva commented on a change in pull request #2047: DRILL-7675: Work around for partitions sender memory use
URL: https://github.com/apache/drill/pull/2047#discussion_r403903697
 
 

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 File path: exec/java-exec/src/main/java/org/apache/drill/exec/ExecConstants.java
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 @@ -189,6 +188,12 @@ private ExecConstants() {
   public static final BooleanValidator HASHAGG_FALLBACK_ENABLED_VALIDATOR = new BooleanValidator(HASHAGG_FALLBACK_ENABLED_KEY,
       new OptionDescription("Hash Aggregates ignore memory limits when enabled (true). When disabled (false), Hash Aggregates fail when memory is set too low."));
 
+  // Partitioner options
+  public static final String PARTITIONER_MEMORY_REDUCTION_THRESHOLD_KEY = "exec.partition.mem_throttle";
+  public static final LongValidator PARTITIONER_MEMORY_REDUCTION_THRESHOLD_VALIDATOR =
+      new RangeLongValidator(PARTITIONER_MEMORY_REDUCTION_THRESHOLD_KEY, 0, Integer.MAX_VALUE,
+      new OptionDescription("Linearly reduces partition sender buffer row count after this number of receivers. Default is 0 (disabled)."));
 
 Review comment:
   Please also add Drill version when option was introduced: `(Drill 1.18+)`

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