[iotdb] 01/01: Throw exeception when device to be queried is not in tsFileMetaData

[sunzesong]

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

sunzesong pushed a commit to branch exception_device
in repository https://gitbox.apache.org/repos/asf/iotdb.git

commit 8fc95a990fdfd7438afdf54cd626e7fdcf213fa5
Author: samperson1997 <sz...@mails.tsinghua.edu.cn>
AuthorDate: Tue Mar 30 10:31:29 2021 +0800

    Throw exeception when device to be queried is not in tsFileMetaData
---
 .../main/java/org/apache/iotdb/tsfile/read/TsFileSequenceReader.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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 bb4a8f01..bc63d93 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
@@ -329,7 +329,7 @@ public class TsFileSequenceReader implements AutoCloseable {
     Pair<MetadataIndexEntry, Long> metadataIndexPair =
         getMetadataAndEndOffset(deviceMetadataIndexNode, path.getDevice(), 
true, true);
     if (metadataIndexPair == null) {
-      return null;
+      throw new IOException("Device {" + path.getDevice() + "} is not in 
tsFileMetaData");
     }
     ByteBuffer buffer = readData(metadataIndexPair.left.getOffset(), 
metadataIndexPair.right);
     MetadataIndexNode metadataIndexNode = deviceMetadataIndexNode;