xinyiZzz commented on code in PR #10170:
URL: https://github.com/apache/doris/pull/10170#discussion_r982555655
##########
fe/fe-core/src/main/java/org/apache/doris/analysis/TupleDescriptor.java:
##########
@@ -159,6 +164,80 @@ public void setTable(TableIf tbl) {
table = tbl;
}
+ public Set<Long> getSampleTabletIds() {
+ return sampleTabletIds;
+ }
+
+ /**
+ * First, determine how many rows to sample from each partition according
to the number of partitions.
+ * Then determine the number of Tablets to be selected for each partition
according to the average number
+ * of rows of Tablet,
+ * If seek is not specified, the specified number of Tablets are
pseudo-randomly selected from each partition.
+ * If seek is specified, it will be selected sequentially from the seek
tablet of the partition.
+ * And add the manually specified Tablet id to the selected Tablet.
+ * simpleTabletNums = simpleRows / partitionNums / (partitionRows /
partitionTabletNums)
+ */
+ public void computeSampleTabletIds(List<Long> tabletIds, TableSample
tableSample) {
+ if (table.getType() != TableType.OLAP) {
+ return;
+ }
+ sampleTabletIds.addAll(tabletIds);
+ if (tableSample == null) {
+ return;
+ }
+ OlapTable olapTable = (OlapTable) table;
+ long sampleRows; // The total number of sample rows
+ long hitRows = 1; // The total number of rows hit by the tablet
+ long totalRows = 0; // The total number of partition rows hit
+ long totalTablet = 0; // The total number of tablets in the hit
partition
+ if (tableSample.isPercent()) {
+ sampleRows = (long) Math.max(olapTable.getRowCount() *
(tableSample.getSampleValues() / 100.0), 1);
+ } else {
+ sampleRows = Math.max(tableSample.getSampleValues(), 1);
Review Comment:
`sampleValue` may be equal to 0, here make sure it is greater than 1,
It seems more reasonable to report syntax errors less than 1?
--
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
