**Describe the bug** <!-- A clear and concise description of what the bug is. --> **What did you do** <!-- If possible, please provide a code receipt to produce this issue. e.g., 1. run `spark-shell --jars xxx.jar` 2. in spark-shell, run ``` val df = spark.sql(“select sum(b) from t where a = 1”) df.show(20) ``` 3. update some data through TiDB 4. in spark-shell, run ``` val df = spark.sql(“select sum(b) from t where a = 1”) df.show(20) ``` --> **What do you expect** <!-- A clear and concise description of what you expected to happen. --> **What happens instead** <!-- If an error occurs, please provide complete error stack. --> <!-- **Screenshots** If applicable, add screenshots to help explain your problem. --> **Spark and TiSpark version info** <!-- What version of Spark and TiSpark are you using? (Provide Spark version and run `spark.sql(“select ti_version()”).show(false)` in spark-shell) --> <!-- **Additional context** Add any other context about the problem here. You may also provide TiDB version here if it is related to the issue. -->
Describe the bug
What did you do
What do you expect
What happens instead
Spark and TiSpark version info