[SPARK-10889] [Streaming] Bump KCL to add MillisBehindLatest metric

[akatz]

I don't believe the API changed at all.

[srowen]

Seems OK to me, but the usual question is simply, does it introduce any potential problems too? changes dependencies, incompatible behavior, etc? might skim the release notes and commits if you can to sanity check.

[SparkQA]

Test build #1834 has finished for PR 8957 at commit 6abc571.

• This patch fails Spark unit tests.
• This patch merges cleanly.
• This patch adds the following public classes (experimental):
  • case class HyperLogLogPlusPlus(child: Expression, relativeSD: Double = 0.05)

[SparkQA]

Test build #1836 has finished for PR 8957 at commit 6abc571.

• This patch fails PySpark unit tests.
• This patch merges cleanly.
• This patch adds no public classes.

[akatz]

I skimmed the changes, it doesn't seem like they changed the public record processing API at all.

[SparkQA]

Test build #1838 has finished for PR 8957 at commit 6abc571.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds the following public classes (experimental):
  • case class HyperLogLogPlusPlus(child: Expression, relativeSD: Double = 0.05)

[srowen]

Merged to master / 1.5

[MLnick]

@akatz did you run the Kinesis-specific tests for this PR? It appears this change may have broken Kinesis Streaming in 1.5.2 - https://mail-archives.apache.org/mod_mbox/spark-user/201512.mbox/%3CCALD%2B6GMXKOR5%3DbGYQhezXbV_qaJsoi2Y2cSbaDETeefWbh84Qg%40mail.gmail.com%3E