gabrywu created SPARK-38258:
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Summary: [proposal] collect & update statistics automatically when
spark SQL is running
Key: SPARK-38258
URL: https://issues.apache.org/jira/browse/SPARK-38258
Project: Spark
Issue Type: Wish
Components: Spark Core, SQL
Affects Versions: 3.2.0, 3.1.0, 3.0.0
Reporter: gabrywu
As we all know, table & column statistics are very important to spark SQL
optimizer, however we have to collect & update them using
{code:java}
analyze table tableName compute statistics{code}
It's a little inconvenient, so why can't we collect & update statistics when a
spark stage runs and finishes?
For example, when a insert overwrite table statement finishes, we can update a
corresponding table statistics using SQL metric. And in next queries, spark sql
optimizer can use these statistics.
So what do you think of it?[~yumwang]
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