[iotdb] branch rel/0.12 updated: [IOTDB-2499] Fix division by zero error when recovering merge

[jackietien]

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

jackietien 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 792f035  [IOTDB-2499] Fix division by zero error when recovering merge
792f035 is described below

commit 792f035c84bf7ac8d11c7e875b7718c56366a60d
Author: Liu Xuxin <37140360+thumark...@users.noreply.github.com>
AuthorDate: Thu Jan 27 08:57:58 2022 +0800

    [IOTDB-2499] Fix division by zero error when recovering merge
---
 .../java/org/apache/iotdb/db/engine/merge/task/RecoverMergeTask.java   | 3 +++
 1 file changed, 3 insertions(+)

diff --git 
a/server/src/main/java/org/apache/iotdb/db/engine/merge/task/RecoverMergeTask.java
 
b/server/src/main/java/org/apache/iotdb/db/engine/merge/task/RecoverMergeTask.java
index b629645..4c7cd44 100644
--- 
a/server/src/main/java/org/apache/iotdb/db/engine/merge/task/RecoverMergeTask.java
+++ 
b/server/src/main/java/org/apache/iotdb/db/engine/merge/task/RecoverMergeTask.java
@@ -178,6 +178,9 @@ public class RecoverMergeTask extends MergeTask {
           MergeUtils.findTotalAndLargestSeriesChunkNum(seqFile, 
resource.getFileReader(seqFile));
       long totalChunkNum = chunkNums[0];
       long maxChunkNum = chunkNums[1];
+      if (totalChunkNum == 0) {
+        continue;
+      }
       long fileMetaSize = MergeUtils.getFileMetaSize(seqFile, 
resource.getFileReader(seqFile));
       long newSingleSeriesSeqReadCost = fileMetaSize * maxChunkNum / 
totalChunkNum;
       singleSeriesSeqReadCost = Math.max(newSingleSeriesSeqReadCost, 
singleSeriesSeqReadCost);