[GitHub] [iotdb] choubenson commented on a diff in pull request #6967: [IOTDB-4117] fix compact bug ArithmeticException: / by zero

[GitBox <gi...@apache.org>]

choubenson commented on code in PR #6967:
URL: https://github.com/apache/iotdb/pull/6967#discussion_r944322179


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server/src/main/java/org/apache/iotdb/db/engine/compaction/cross/utils/ReadPointCrossCompactionEstimator.java:
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@@ -93,8 +106,17 @@ private long calculateReadingSeqFiles(List<TsFileResource> seqResources) throws
       // it is max aligned series num of one device when tsfile contains aligned series,
       // else is sub compaction task num.
       int concurrentSeriesNum = fileInfo[2] == -1 ? subCompactionTaskNum : fileInfo[2];
-      long seqFileCost =
-          concurrentSeriesNum * (seqResource.getTsFileSize() * fileInfo[1] / fileInfo[0]);
+      long seqFileCost = 0;
+      if (fileInfo[0] == 0) { // If totalChunkNum ==0, i.e. this unSeq tsFile has no chunk.

Review Comment:
   Modify the comments as `seq tsFile`



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