[SPARK-29182][CORE][FOLLOWUP] Cache preferred locations of checkpoint…

…ed RDD ### What changes were proposed in this pull request? This is a followup to #25856. This fixes the document about the config value of spark.rdd.checkpoint.cachePreferredLocsExpireTime. ### Why are the changes needed? The document is not correct. spark.rdd.checkpoint.cachePreferredLocsExpireTime can not be 0. ### Does this PR introduce any user-facing change? No ### How was this patch tested? This is document only change. Closes #26251 from viirya/SPARK-29182-followup. Authored-by: Liang-Chi Hsieh <[email protected]> Signed-off-by: Dongjoon Hyun <[email protected]>
apache · Oct 25, 2019 · ae5b60d · ae5b60d
1 parent 68dca9a
commit ae5b60d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/core/src/main/scala/org/apache/spark/internal/config/package.scala b/core/src/main/scala/org/apache/spark/internal/config/package.scala
@@ -804,7 +804,7 @@ package object config {
       .doc("Expire time in minutes for caching preferred locations of checkpointed RDD." +
         "Caching preferred locations can relieve query loading to DFS and save the query " +
         "time. The drawback is that the cached locations can be possibly outdated and " +
-        "lose data locality. If this config is not specified or is 0, it will not cache.")
+        "lose data locality. If this config is not specified, it will not cache.")
       .timeConf(TimeUnit.MINUTES)
       .checkValue(_ > 0, "The expire time for caching preferred locations cannot be non-positive.")
       .createOptional