[iotdb] branch rel/0.12 updated: handle false positive cases of tsfile bloom filter (#3471)

[qiaojialin]

This is an automated email from the ASF dual-hosted git repository.

qiaojialin pushed a commit to branch rel/0.12
in repository https://gitbox.apache.org/repos/asf/iotdb.git


The following commit(s) were added to refs/heads/rel/0.12 by this push:
     new 3f23dde  handle false positive cases of tsfile bloom filter (#3471)
3f23dde is described below

commit 3f23dde04ceeadb04160d5cc0c82e2cfbce3d4ba
Author: Steve Yurong Su (宇荣) <r...@apache.org>
AuthorDate: Tue Jun 29 06:12:50 2021 -0500

    handle false positive cases of tsfile bloom filter (#3471)
---
 .../main/java/org/apache/iotdb/tsfile/read/TsFileSequenceReader.java  | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git 
a/tsfile/src/main/java/org/apache/iotdb/tsfile/read/TsFileSequenceReader.java 
b/tsfile/src/main/java/org/apache/iotdb/tsfile/read/TsFileSequenceReader.java
index 16d2704..dfebda9 100644
--- 
a/tsfile/src/main/java/org/apache/iotdb/tsfile/read/TsFileSequenceReader.java
+++ 
b/tsfile/src/main/java/org/apache/iotdb/tsfile/read/TsFileSequenceReader.java
@@ -378,7 +378,7 @@ public class TsFileSequenceReader implements AutoCloseable {
     Pair<MetadataIndexEntry, Long> metadataIndexPair =
         getMetadataAndEndOffset(deviceMetadataIndexNode, path.getDevice(), 
true, true);
     if (metadataIndexPair == null) {
-      return null;
+      return Collections.emptyList();
     }
     ByteBuffer buffer = readData(metadataIndexPair.left.getOffset(), 
metadataIndexPair.right);
     MetadataIndexNode metadataIndexNode = deviceMetadataIndexNode;
@@ -393,7 +393,7 @@ public class TsFileSequenceReader implements AutoCloseable {
           getMetadataAndEndOffset(metadataIndexNode, path.getMeasurement(), 
false, false);
     }
     if (metadataIndexPair == null) {
-      return null;
+      return Collections.emptyList();
     }
     List<TimeseriesMetadata> timeseriesMetadataList = new ArrayList<>();
     buffer = readData(metadataIndexPair.left.getOffset(), 
metadataIndexPair.right);