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https://issues.apache.org/jira/browse/ARROW-8909?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Saurabh updated ARROW-8909:
---------------------------
Priority: Minor (was: Major)
> 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: Minor
>
> 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 ""
>
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