Sjwhello commented on code in PR #47066:
URL: https://github.com/apache/doris/pull/47066#discussion_r1921918054
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fe/fe-core/src/main/java/org/apache/doris/common/cache/NereidsSqlCacheManager.java:
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@@ -350,13 +346,35 @@ private boolean tablesOrDataChanged(Env env,
SqlCacheContext sqlCacheContext) {
return true;
}
OlapTable olapTable = (OlapTable) tableIf;
- Collection<Long> partitionIds = scanTable.getScanPartitions();
- olapTable.getVersionInBatchForCloudMode(partitionIds);
-
- for (Long scanPartitionId : scanTable.getScanPartitions()) {
- Partition partition = olapTable.getPartition(scanPartitionId);
+ List<Column> currentFullSchema = olapTable.getFullSchema();
+ List<SqlCacheContext.ColumnSection> cacheFullSchema =
scanTable.latestColumns;
+ if (currentFullSchema.size() != cacheFullSchema.size()) {
+ return true;
+ }
+ for (int i = 0; i < currentFullSchema.size(); i++) {
+ Column currentColumn = currentFullSchema.get(i);
+ SqlCacheContext.ColumnSection cacheColumn =
cacheFullSchema.get(i);
+ if ((currentColumn == null || cacheColumn == null)
+ || (currentColumn.hashCode() !=
cacheColumn.getHashCode())) {
+ return true;
+ }
+ if (!Objects.equals(currentColumn.getName(),
cacheColumn.getName())) {
+ return true;
+ }
+ if (!Objects.equals(currentColumn.getType().toString(),
cacheColumn.getType())) {
+ return true;
+ }
+ }
+ Map<Long, Partition> partitionMap =
olapTable.getAllPartitions().stream()
+ .collect(Collectors.toMap(Partition::getId,
Function.identity()));
Review Comment:
> it seems expensive, why not use OlapTable.idToPartition and
OlapTable.tempPartitions.idToPartition
At first I was using OlapTable.idToPartition and
OlapTable.TempPartitions.IdToPartition, But wen xin, say will lose performance
in cloud mode. So I use this way.
<img width="808" alt="image"
src="https://github.com/user-attachments/assets/56f55087-4003-4968-8554-5706b7cf4a50";
/>
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