Github user mengxr commented on a diff in the pull request:
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--- Diff:
core/src/main/scala/org/apache/spark/util/random/SamplingUtils.scala ---
@@ -88,14 +91,73 @@ private[spark] object SamplingUtils {
*/
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QA results for PR 1025:br- This patch PASSES unit tests.br- This patch
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Github user mengxr commented on the pull request:
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LGTM. Merged into master. Thanks!!
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Github user asfgit closed the pull request at:
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GitHub user dorx reopened a pull request:
https://github.com/apache/spark/pull/1025
[SPARK-2082] stratified sampling in PairRDDFunctions that guarantees exact
sample size
Implemented stratified sampling that guarantees exact sample size using
ScaRSR with two passes over the RDD
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QA results for PR 1025:br- This patch FAILED unit tests.br- This patch
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Github user mengxr commented on the pull request:
https://github.com/apache/spark/pull/1025#issuecomment-50290028
@dorx I removed commons-math3 from dependencies, separated `sampleByKey`
and `sampleByKeyExact`, and corrected the math in waitlisting in sampling with
replacement.
Github user dorx closed the pull request at:
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QA results for PR 1025:br- This patch FAILED unit tests.br- This patch
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(experimental):brcase class
Github user dorx commented on the pull request:
https://github.com/apache/spark/pull/1025#issuecomment-50071767
Looks like there's some API changes from Xiangrui's updates. @mateiz
@pwendell
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Github user dorx commented on the pull request:
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Also, seems like there wasn't a single line of code preserved from before
the updates. We should probably close this PR and let Xiangrui submit his
version in a separate PR
Github user mateiz commented on the pull request:
https://github.com/apache/spark/pull/1025#issuecomment-50101767
Sorry, how was the API changed, was it making `sampleByKeyExact` a separate
method and making it experimental? That actually seems okay to me, the
algorithm there is
Github user falaki commented on the pull request:
https://github.com/apache/spark/pull/1025#issuecomment-50104259
This is the first place we introduce 'exact' to our API. We already have
'approx' in function names. I think having both of them is confusing to users.
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Github user mateiz commented on the pull request:
https://github.com/apache/spark/pull/1025#issuecomment-50109108
Well, the other sample functions are already approximate anyway. I kind
of like this here because it conveys that it's more expensive. The other thing
is that if we want
Github user dorx commented on a diff in the pull request:
https://github.com/apache/spark/pull/1025#discussion_r14906065
--- Diff: pom.xml ---
@@ -257,6 +257,11 @@
version1.5/version
/dependency
dependency
+
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https://github.com/apache/spark/pull/1025#discussion_r14906349
--- Diff: core/src/main/scala/org/apache/spark/rdd/PairRDDFunctions.scala
---
@@ -195,6 +193,37 @@ class PairRDDFunctions[K, V](self: RDD[(K, V)])
}
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https://github.com/apache/spark/pull/1025#discussion_r14906412
--- Diff: core/src/main/scala/org/apache/spark/rdd/PairRDDFunctions.scala
---
@@ -195,6 +193,37 @@ class PairRDDFunctions[K, V](self: RDD[(K, V)])
}
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--- Diff:
core/src/main/scala/org/apache/spark/util/random/StratifiedSampler.scala ---
@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
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--- Diff:
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@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
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--- Diff:
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@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
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--- Diff:
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@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
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--- Diff:
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@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
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@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
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@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
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--- Diff: core/src/main/scala/org/apache/spark/rdd/PairRDDFunctions.scala
---
@@ -195,6 +193,37 @@ class PairRDDFunctions[K, V](self: RDD[(K, V)])
}
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--- Diff: core/src/main/scala/org/apache/spark/rdd/PairRDDFunctions.scala
---
@@ -195,6 +193,37 @@ class PairRDDFunctions[K, V](self: RDD[(K, V)])
}
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@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
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@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
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@@ -0,0 +1,335 @@
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--- Diff:
core/src/main/scala/org/apache/spark/util/random/SamplingUtils.scala ---
@@ -45,11 +50,75 @@ private[spark] object SamplingUtils {
val
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@@ -0,0 +1,310 @@
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val
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Github user dorx commented on the pull request:
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Holding out on updating the docs until the python version is supported.
For the python version, any objections to using _jrdd to invoke the java
version of sampleByKey?
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--- Diff: pom.xml ---
@@ -257,6 +257,11 @@
version1.5/version
/dependency
dependency
+
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/dependency
dependency
+
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--- Diff: core/src/main/scala/org/apache/spark/rdd/PairRDDFunctions.scala
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@@ -195,6 +193,37 @@ class PairRDDFunctions[K, V](self: RDD[(K, V)])
}
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--- Diff: core/src/main/scala/org/apache/spark/api/java/JavaPairRDD.scala
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@@ -130,6 +130,38 @@ class JavaPairRDD[K, V](val rdd: RDD[(K, V)])
new
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--- Diff: core/src/main/scala/org/apache/spark/api/java/JavaPairRDD.scala
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@@ -130,6 +130,38 @@ class JavaPairRDD[K, V](val rdd: RDD[(K, V)])
new
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--- Diff:
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@@ -45,11 +50,78 @@ private[spark] object SamplingUtils {
val
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--- Diff:
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@@ -0,0 +1,311 @@
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+ * Licensed to the Apache Software
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}
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}
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https://github.com/apache/spark/pull/1025#discussion_r14694254
--- Diff:
core/src/main/scala/org/apache/spark/util/random/SamplingUtils.scala ---
@@ -45,11 +50,78 @@ private[spark] object SamplingUtils {
val
Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/1025#discussion_r14694267
--- Diff:
core/src/main/scala/org/apache/spark/util/random/StratifiedSampler.scala ---
@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/1025#discussion_r14694277
--- Diff:
core/src/main/scala/org/apache/spark/util/random/StratifiedSampler.scala ---
@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/1025#discussion_r14694296
--- Diff:
core/src/main/scala/org/apache/spark/util/random/StratifiedSampler.scala ---
@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/1025#discussion_r14694292
--- Diff:
core/src/main/scala/org/apache/spark/util/random/StratifiedSampler.scala ---
@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/1025#discussion_r14694294
--- Diff:
core/src/main/scala/org/apache/spark/util/random/StratifiedSampler.scala ---
@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/1025#discussion_r14694274
--- Diff:
core/src/main/scala/org/apache/spark/util/random/StratifiedSampler.scala ---
@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/1025#discussion_r14694285
--- Diff:
core/src/main/scala/org/apache/spark/util/random/StratifiedSampler.scala ---
@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/1025#discussion_r14694278
--- Diff:
core/src/main/scala/org/apache/spark/util/random/StratifiedSampler.scala ---
@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/1025#discussion_r14694281
--- Diff:
core/src/main/scala/org/apache/spark/util/random/StratifiedSampler.scala ---
@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/1025#discussion_r14694283
--- Diff:
core/src/main/scala/org/apache/spark/util/random/StratifiedSampler.scala ---
@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software
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