jt2594838 commented on code in PR #17127:
URL: https://github.com/apache/iotdb/pull/17127#discussion_r2752227917
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iotdb-core/datanode/src/main/java/org/apache/iotdb/db/utils/SchemaUtils.java:
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@@ -46,12 +47,16 @@
import java.util.List;
import java.util.Map;
import java.util.Objects;
+import java.util.Set;
import static
org.apache.iotdb.db.queryengine.execution.operator.AggregationUtil.addPartialSuffix;
public class SchemaUtils {
private static final Map<TSDataType, Class> dataTypeColumnClassMap;
+ private static final Map<TSDataType, Class> dataTypeColumnStatisticsClassMap;
+ private static final Set<TSDataType> canNotUseStatisticsClassSet =
+ ImmutableSet.of(TSDataType.STRING, TSDataType.TEXT, TSDataType.BLOB);
Review Comment:
It is weird to call STRING canNotUseStatistic, because it has all the
statistics.
Maybe you should say canNotUseStatisticAfterAlter.
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