vvysotskyi commented on a change in pull request #1935: DRILL-7483: Add support
for 12 and 13 java versions
URL: https://github.com/apache/drill/pull/1935#discussion_r358248206
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File path:
exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/validate/BatchValidator.java
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@@ -173,6 +173,10 @@ public BatchValidator(ErrorReporter errorReporter) {
}
public static boolean validate(RecordBatch batch) {
+ // This is a handy place to trace batches as they flow up
+ // the DAG. Works best for single-threaded runs with few records.
Review comment:
Currently, we don't have a method that would print data for every operator
after its execution. These lines were moved back after removing them with the
changes from DRILL-7324, but it is really useful to have this code to track
batches execution.
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