Github user rxin commented on the issue:
https://github.com/apache/spark/pull/16401
How about the following?
```
def stats(conf: CatalystConf): Statistics = statsCache.getOrElse {
invalidateStatsCache()
statsCache = Some(computeStats(conf))
statsCache.get . //technically this is not correct due to multi-threading
... but that's an easy fix
}
def invalidateStatsCache(): Unit = {
statisticsCache = None
children.foreach(_.invalidateStatsCache())
}
protected def computeStats(conf: CatalystConf): Statistics . // override by
children
```
Each children's computeStats can define how it works by looking at the cbo
flag.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
