ffdd1fcd1e
## What changes were proposed in this pull request? This is a bug introduced by subquery handling. numberedTreeString (which uses generateTreeString under the hood) numbers trees including innerChildren (used to print subqueries), but apply (which uses getNodeNumbered) ignores innerChildren. As a result, apply(i) would return the wrong plan node if there are subqueries. This patch fixes the bug. ## How was this patch tested? Added a test case in SubquerySuite.scala to test both the depth-first traversal of numbering as well as making sure the two methods are consistent. Author: Reynold Xin <rxin@databricks.com> Closes #16277 from rxin/SPARK-18854. |
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