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Author SHA1 Message Date
Yun Ni 30d10ab035 Convert handle == nullptr from SegFault to user-friendly error. (#3021) 
* Convert SegFault to user-friendly error.

* Apply the change to DMatrix API as well
 2018-06-29 06:30:26 +00:00
Yun Ni 8b2f4e2d39 [jvm-packages] Move cache files to TempDirectory and delete this directory after XGBoost job finishes (#3022) 
* [jvm-packages] Move cache files to tmp dir and delete on exit

* Delete the cache dir when watches are deleted
 2018-01-20 21:13:25 -08:00
Yun Ni 3f3f54bcad [jvm-packages] Update docs and unify the terminology (#3024) 
* [jvm-packages] Move cache files to tmp dir and delete on exit

* [jvm-packages] Update docs and unify terminology

* Address CR Comments
 2018-01-16 17:16:55 +01:00
Yun Ni 740eba42f7 [jvm-packages] Add back the overriden finalize() method for SBooster (#3011) 
* Convert SIGSEGV to XGBoostError

* Address CR Comments

* Address CR Comments
 2018-01-06 14:07:37 -08:00
Yun Ni 65fb4e3f5c [jvm-packages] Prevent dispose being called on unfinalized JBooster (#3005) 
* [jvm-packages] Prevent dispose being called twice when finalize

* Convert SIGSEGV to XGBoostError

* Avoid creating a new SBooster with the same JBooster

* Address CR Comments
 2018-01-06 09:46:52 -08:00
Yun Ni 9004ca03ca [jvm-packages] Saving models into a tmp folder every a few rounds (#2964) 
* [jvm-packages] Train Booster from an existing model

* Align Scala API with Java API

* Existing model should not load rabit checkpoint

* Address minor comments

* Implement saving temporary boosters and loading previous booster

* Add more unit tests for loadPrevBooster

* Add params to XGBoostEstimator

* (1) Move repartition out of the temp model saving loop (2) Address CR comments

* Catch a corner case of training next model with fewer rounds

* Address comments

* Refactor newly added methods into TmpBoosterManager

* Add two files which is missing in previous commit

* Rename TmpBooster to checkpoint
 2017-12-29 08:36:41 -08:00
Yun Ni b678e1711d [jvm-packages] Add SparkParallelismTracker to prevent job from hanging (#2697) 
* Add SparkParallelismTracker to prevent job from hanging

* Code review comments

* Code Review Comments

* Fix unit tests

* Changes and unit test to catch the corner case.

* Update documentations

* Small improvements

* cancalAllJobs is problematic with scalatest. Remove it

* Code Review Comments

* Check number of executor cores beforehand, and throw exeception if any core is lost.

* Address CR Comments

* Add missing class

* Fix flaky unit test

* Address CR comments

* Remove redundant param for TaskFailedListener
 2017-10-16 20:18:47 -07:00
Yun Ni 8244f6f120 Use Sudo-enabled VM which has 7.5GB memory (#2680) 2017-09-07 08:36:37 -07:00
Yun Ni f04bde05fd Add Coverage Report for Java and Python (#2667) 
* Add coverage report for java

* Add coverage report for python

* Increase memory for JVM unit tests

* Increase memory for JVM unit tests
 2017-09-05 14:46:51 -07:00
Yun Ni a00157543d Support instance weights for xgboost4j-spark (#2642) 
* Support instance weights for xgboost4j-spark

* Use 0.001 instead of 0 for weights

* Address CR comments
 2017-08-28 09:03:20 -07:00