Repository: spark Updated Branches: refs/heads/master d8e14db84 -> 28ab0ec49
[SPARK-19006][DOCS] mention spark.kryoserializer.buffer.max must be less than 2048m in doc ## What changes were proposed in this pull request? On configuration doc page:https://spark.apache.org/docs/latest/configuration.html We mentioned spark.kryoserializer.buffer.max : Maximum allowable size of Kryo serialization buffer. This must be larger than any object you attempt to serialize. Increase this if you get a "buffer limit exceeded" exception inside Kryo. from source code, it has hard coded upper limit : ``` val maxBufferSizeMb = conf.getSizeAsMb("spark.kryoserializer.buffer.max", "64m").toInt if (maxBufferSizeMb >= ByteUnit.GiB.toMiB(2)) { throw new IllegalArgumentException("spark.kryoserializer.buffer.max must be less than " + s"2048 mb, got: + $maxBufferSizeMb mb.") } ``` We should mention "this value must be less than 2048 mb" on the configuration doc page as well. ## How was this patch tested? None. Since it's minor doc change. Author: Yuexin Zhang <[email protected]> Closes #16412 from cnZach/SPARK-19006. Project: http://git-wip-us.apache.org/repos/asf/spark/repo Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/28ab0ec4 Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/28ab0ec4 Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/28ab0ec4 Branch: refs/heads/master Commit: 28ab0ec49fa9bac1c4a246a44a5d1ad163660e1a Parents: d8e14db Author: Yuexin Zhang <[email protected]> Authored: Tue Dec 27 20:29:45 2016 +0000 Committer: Sean Owen <[email protected]> Committed: Tue Dec 27 20:29:45 2016 +0000 ---------------------------------------------------------------------- docs/configuration.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/spark/blob/28ab0ec4/docs/configuration.md ---------------------------------------------------------------------- diff --git a/docs/configuration.md b/docs/configuration.md index 39bfb3a..bd67144 100644 --- a/docs/configuration.md +++ b/docs/configuration.md @@ -840,8 +840,8 @@ Apart from these, the following properties are also available, and may be useful <td>64m</td> <td> Maximum allowable size of Kryo serialization buffer. This must be larger than any - object you attempt to serialize. Increase this if you get a "buffer limit exceeded" exception - inside Kryo. + object you attempt to serialize and must be less than 2048m. + Increase this if you get a "buffer limit exceeded" exception inside Kryo. </td> </tr> <tr> --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
