JingsongLi commented on a change in pull request #13636:
URL: https://github.com/apache/flink/pull/13636#discussion_r510559354
##########
File path:
flink-connectors/flink-connector-hive/src/main/java/org/apache/flink/connectors/hive/HiveTableSource.java
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@@ -210,19 +212,35 @@ private boolean isStreamingSource() {
" cannot be
less than 1");
}
- int splitNum;
try {
- long nano1 = System.nanoTime();
- splitNum =
inputFormat.createInputSplits(0).length;
- long nano2 = System.nanoTime();
+ // `createInputSplits` is costly,
Review comment:
Can you extract these parallelism inference logic to a dedicated class
like `HiveParallelismInference` (Including limit logic)?
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