EmmyMiao87 commented on code in PR #8861:
URL: https://github.com/apache/incubator-doris/pull/8861#discussion_r867312208
##########
fe/fe-core/src/main/java/org/apache/doris/statistics/MetaStatisticsTask.java:
##########
@@ -17,21 +17,85 @@
package org.apache.doris.statistics;
+import org.apache.doris.catalog.Catalog;
+import org.apache.doris.catalog.Column;
+import org.apache.doris.catalog.Database;
+import org.apache.doris.catalog.OlapTable;
+import org.apache.doris.catalog.Table;
+import org.apache.doris.common.DdlException;
+
+import com.google.common.collect.Maps;
+
import java.util.List;
+import java.util.Map;
-/*
-A statistics task that directly collects statistics by reading FE meta.
+/**
+ * A statistics task that directly collects statistics by reading FE meta.
+ * e.g. for fixed-length types such as Int type and Long type we get their
size from metadata.
*/
public class MetaStatisticsTask extends StatisticsTask {
- public MetaStatisticsTask(long jobId, StatsGranularityDesc granularityDesc,
- StatsCategoryDesc categoryDesc, List<StatsType>
statsTypeList) {
+ public MetaStatisticsTask(long jobId,
+ StatsGranularityDesc granularityDesc,
Review Comment:
A meta task may need to collect at the same time: the row count of the
table, the length information of multiple columns.
This initialization method cannot collect these data at the same time.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org
For additional commands, e-mail: commits-h...@doris.apache.org
