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[HUDI-1701] Implement HoodieTableSource.explainSource for all kinds of pushing down (#2690)

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We should implement the interface HoodieTableSource.explainSource to
track the table source signature diff for all kinds of pushing down,
such as filter pushing or limit pushing.
This commit is contained in:
Danny Chan
2021-03-17 23:05:18 +08:00
committed by GitHub
parent 74241947c1
commit 968488fa3a
2 changed files with 22 additions and 2 deletions
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13
hudi-flink/src/main/java/org/apache/hudi/table/HoodieTableSource.java
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@@ -68,6 +68,7 @@ import org.apache.flink.table.sources.StreamTableSource;
import org.apache.flink.table.sources.TableSource;
import org.apache.flink.table.types.DataType;
import org.apache.flink.table.types.logical.RowType;
import org.apache.flink.table.utils.TableConnectorUtils;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.mapred.JobConf;
@@ -234,6 +235,18 @@ public class HoodieTableSource implements
return schema;
}
@Override
public String explainSource() {
final String filterString = filters.stream()
.map(Expression::asSummaryString)
.collect(Collectors.joining(","));
return TableConnectorUtils.generateRuntimeName(getClass(), getTableSchema().getFieldNames())
+ (requiredPartitions == null ? "" : ", requiredPartition=" + requiredPartitions)
+ (requiredPos == null ? "" : ", requiredPos=" + Arrays.toString(requiredPos))
+ (limit == -1 ? "" : ", limit=" + limit)
+ (filters.size() == 0 ? "" : ", filters=" + filterString);
}
@Override
public DataType getProducedDataType() {
String[] schemaFieldNames = this.schema.getFieldNames();