[SPARK-6428] Added explicit types for all public methods in core.

[rxin]

No description provided.

[SparkQA]

Test build #28957 has started for PR 5125 at commit f3f69d1.

• This patch merges cleanly.

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[rxin]

Jenkins, retest this please.

[SparkQA]

Test build #28968 has started for PR 5125 at commit f3f69d1.

• This patch merges cleanly.

[SparkQA]

Test build #28968 has finished for PR 5125 at commit f3f69d1.

• This patch fails Scala style tests.
• This patch merges cleanly.
• This patch adds the following public classes (experimental):
  • case class ExecutorCacheTaskLocation(override val host: String, executorId: String)

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[rxin]

Jenkins, retest this please.

[SparkQA]

Test build #28969 has started for PR 5125 at commit f3f69d1.

• This patch merges cleanly.

[SparkQA]

Test build #28969 has finished for PR 5125 at commit f3f69d1.

• This patch fails MiMa tests.
• This patch merges cleanly.
• This patch adds the following public classes (experimental):
  • case class ExecutorCacheTaskLocation(override val host: String, executorId: String)

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Test build #28977 has started for PR 5125 at commit 7243c27.

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Test build #28977 has finished for PR 5125 at commit 7243c27.

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• This patch merges cleanly.
• This patch adds the following public classes (experimental):
  • case class ExecutorCacheTaskLocation(override val host: String, executorId: String)

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[squito]

shouldn't the return type here by RDD[T], since EmptyRDD is private[spark] and just an implementation detail?

[rxin]

it should - except then it broke binary compatibility :(

[rxin]

BTW functions are like this are why we should always declare types explicitly.

[srowen]

This is written up a bit more in https://issues.apache.org/jira/browse/SPARK-2331 which should be reopened for the new "2+" bucket in JIRA. This should be fixed when binary compatibility can be broken. Yes, big +1 to tightening up types like this.

[squito]

ah right, thanks for clarifying.

its really a shame that the scala compiler didn't warn in the first place that this method led to EmptyRDD was escaping its declared scope.

[JoshRosen]

LGTM overall.

[SparkQA]

Test build #29053 has started for PR 5125 at commit 81b66e4.

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[SparkQA]

Test build #29053 has finished for PR 5125 at commit 81b66e4.

• This patch fails Scala style tests.
• This patch merges cleanly.
• This patch adds the following public classes (experimental):
  • case class ExecutorCacheTaskLocation(override val host: String, executorId: String)

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[SparkQA]

Test build #29054 has started for PR 5125 at commit f471415.

• This patch merges cleanly.

[SparkQA]

Test build #29054 has finished for PR 5125 at commit f471415.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds the following public classes (experimental):
  • case class ExecutorCacheTaskLocation(override val host: String, executorId: String)

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