commit 67f9139f07942e96bfa8324e5b8fb7b64ff40c0f
author Jesus Camacho Rodriguez <jcamacho@apache.org> Wed Nov 20 12:58:08 2019 -0800
committer Jesus Camacho Rodriguez <jcamacho@apache.org> Wed Nov 20 13:00:57 2019 -0800
tree 24a50be07dbd4f4e9f0ca663e929db704517b3a0
parent b1485079068b1ce623daa9cafaeee37f1eb20c18

HIVE-22480: IndexOutOfBounds exception while reading ORC files written with empty positions list in first row index entry (Jesus Camacho Rodriguez, reviewed by Prasanth Jayachandran)

orc/src/java/org/apache/hive/orc/impl/RecordReaderUtils.java

diff --git a/orc/src/java/org/apache/hive/orc/impl/RecordReaderUtils.java b/orc/src/java/org/apache/hive/orc/impl/RecordReaderUtils.java
index 16af69d..4f9a0fb 100644
--- a/orc/src/java/org/apache/hive/orc/impl/RecordReaderUtils.java
+++ b/orc/src/java/org/apache/hive/orc/impl/RecordReaderUtils.java
@@ -248,7 +248,7 @@ public static void addRgFilteredStreamToRanges(OrcProto.Stream stream,
       if (!includedRowGroups[group]) continue;
       int posn = getIndexPosition(
           encoding.getKind(), type.getKind(), stream.getKind(), isCompressed, hasNull);
-      long start = index.getEntry(group).getPositions(posn);
+      long start = group == 0 ? 0 : index.getEntry(group).getPositions(posn);
       final long nextGroupOffset;
       boolean isLast = group == (includedRowGroups.length - 1);
       nextGroupOffset = isLast ? length : index.getEntry(group + 1).getPositions(posn);