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| author | Josh Rosen <joshrosen@databricks.com> | 2016-08-30 09:58:00 +0800 |
|---|---|---|
| committer | Reynold Xin <rxin@databricks.com> | 2016-08-30 09:58:00 +0800 |
| commit | 48b459ddd58affd5519856cb6e204398b7739a2a (patch) | |
| tree | 7533ffd9546261dff30edb0a193a7a5f32b3ce95 /dev/.rat-excludes | |
| parent | 736a7911cb0335cdb2b2f6c87f9e3c32047b5bbb (diff) | |
| download | spark-48b459ddd58affd5519856cb6e204398b7739a2a.tar.gz spark-48b459ddd58affd5519856cb6e204398b7739a2a.tar.bz2 spark-48b459ddd58affd5519856cb6e204398b7739a2a.zip | |
[SPARK-17301][SQL] Remove unused classTag field from AtomicType base class
There's an unused `classTag` val in the AtomicType base class which is causing unnecessary slowness in deserialization because it needs to grab ScalaReflectionLock and create a new runtime reflection mirror. Removing this unused code gives a small but measurable performance boost in SQL task deserialization.
Author: Josh Rosen <joshrosen@databricks.com>
Closes #14869 from JoshRosen/remove-unused-classtag.
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