Jibing-Li commented on code in PR #26435:
URL: https://github.com/apache/doris/pull/26435#discussion_r1390554306
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fe/fe-core/src/main/java/org/apache/doris/statistics/OlapAnalysisTask.java:
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@@ -85,46 +75,95 @@ public void doExecute() throws Exception {
* 3. insert col stats and partition stats
*/
protected void doSample() throws Exception {
- Pair<List<Long>, Long> pair = calcActualSampleTablets();
+ LOG.info(String.format("Will do sample collection for column %s",
col.getName()));
+ Pair<List<Long>, Long> pair =
calcActualSampleTablets(isPartitionColumn());
+ LOG.info(String.format("Number of tablets selected %d, rows in tablets
%d", pair.first.size(), pair.second));
List<Long> tabletIds = pair.first;
double scaleFactor = (double) tbl.getRowCount() / (double) pair.second;
// might happen if row count in fe metadata hasn't been updated yet
if (Double.isInfinite(scaleFactor) || Double.isNaN(scaleFactor)) {
+ LOG.warn("Scale factor is infinite or Nan, will set scale factor
to 1.");
Review Comment:
It might happen if row count in fe metadata hasn't been updated yet
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