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Wes McKinney updated ARROW-8909: -------------------------------- Summary: [Java] Out of order writes using setSafe (was: Out of order writes using setSafe) > [Java] Out of order writes using setSafe > ---------------------------------------- > > Key: ARROW-8909 > URL: https://issues.apache.org/jira/browse/ARROW-8909 > Project: Apache Arrow > Issue Type: Bug > Components: Java > Reporter: Saurabh > Priority: Major > > I noticed that calling setSafe on a VarCharVector with indices not in > increasing order causes the lastIndex to be set to the index in the last call > to setSafe. > Is this a documented and expected behavior ? > Sample code: > {code:java} > import java.util.Collections; > import lombok.extern.slf4j.Slf4j; > import org.apache.arrow.memory.RootAllocator; > import org.apache.arrow.vector.VarCharVector; > import org.apache.arrow.vector.VectorSchemaRoot; > import org.apache.arrow.vector.types.pojo.ArrowType; > import org.apache.arrow.vector.types.pojo.Field; > import org.apache.arrow.vector.types.pojo.Schema; > import org.apache.arrow.vector.util.Text; > @Slf4j > public class ATest { > public static void main() { > Schema schema = new > Schema(Collections.singletonList(Field.nullable("Data", new > ArrowType.Utf8()))); > try (VectorSchemaRoot vroot = VectorSchemaRoot.create(schema, new > RootAllocator())) { > VarCharVector vec = (VarCharVector) vroot.getVector("Data"); > for (int i = 0; i < 10; i++) { > vec.setSafe(i, new Text(Integer.toString(i) + "_mtest")); > } > // vec.setSafe(0, new Text(Integer.toString(0) + "_new")); > vec.setSafe(7, new Text(Integer.toString(7) + "_new")); > vroot.setRowCount(10); > log.info(vroot.contentToTSVString()); > } > } > } > {code} > > If I don't set the 0 or 7 after the loop, I get all the 0_mtest, 1_mtest, > ..., 9_mtest entries. > If I set index 0 after the loop, I only see 0_new entry; other entries are "" > If I set index 7 after the loop, I see 0_mtest, ..., 5_mtest, 7_new; other > entries are "" > -- This message was sent by Atlassian Jira (v8.3.4#803005)