okumin commented on a change in pull request #1636:
URL: https://github.com/apache/hive/pull/1636#discussion_r572272405
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File path: ql/src/java/org/apache/hadoop/hive/ql/stats/StatsUtils.java
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@@ -316,12 +319,11 @@ private static Statistics collectStatistics(HiveConf
conf, PrunedPartitionList p
basicStatsFactory.addEnhancer(new
BasicStats.RowNumEstimator(estimateRowSizeFromSchema(conf, schema)));
- List<BasicStats> partStats = new ArrayList<>();
+ List<BasicStats> partStats =
+ partList.getNotDeniedPartns().parallelStream().
Review comment:
The point is `basicStatsFactory.build(Partish.buildFor(table, p))` can
block the common pool shared with a whole JVM since it executes blocking-IO?
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