cxzl25 opened a new pull request, #8965:
URL: https://github.com/apache/paimon/pull/8965
### Purpose
`PaimonAnalyzeTableColumnCommand` computed `mergedRecordSize` as:
```scala
totalSize * (mergedRecordCount.toDouble / totalRecordCount).toLong
```
The .toLong was applied to the ratio before multiplying by totalSize. Since
mergedRecordCount <= totalRecordCount, the ratio is always in [0, 1], so it
gets truncated to 0 whenever mergedRecordCount < totalRecordCount (e.g. after
updates on a primary-key table), making mergedRecordSize incorrectly 0 even
though there is data.
### Tests
```bash
mvn -pl paimon-spark/paimon-spark-3.5 -am -Pfast-build -Pspark3 \
-DwildcardSuites=org.apache.paimon.spark.sql.AnalyzeTableTest \
-DfailIfNoTests=false -Dtest=none test -o
```
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