srowen commented on issue #27330: [SPARK-30630][ML] Remove numTrees in GBT in 3.0.0 URL: https://github.com/apache/spark/pull/27330#issuecomment-579779564 The policy, such as it exists, has always been roughly to remove deprecated items in a major release (fine of course), or in a minor release after it's been deprecated for at least one prior minor release (aggressive, but can be fine). Yes, we've done both many times. This is the first situation. @gatorsmile what do you think the rule has been? I'm not sure I have perceived any other disagreement about that. This particular change is really minor either way. Deprecating is obviously correct. Whether it's removed in 3.0 or 3.1 doesn't matter much, but, why keep it in 3.0? it's obviously an old API oversight.
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