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author | Yuexin Zhang <yxzhang@cloudera.com> | 2016-12-27 20:29:45 +0000 |
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committer | Sean Owen <sowen@cloudera.com> | 2016-12-27 20:29:45 +0000 |
commit | 28ab0ec49fa9bac1c4a246a44a5d1ad163660e1a (patch) | |
tree | 2b0f33b29bc731767c8cd745b051390cdba6b820 | |
parent | d8e14db84f5ea752fbe92036209f67232b4dcc1f (diff) | |
download | spark-28ab0ec49fa9bac1c4a246a44a5d1ad163660e1a.tar.gz spark-28ab0ec49fa9bac1c4a246a44a5d1ad163660e1a.tar.bz2 spark-28ab0ec49fa9bac1c4a246a44a5d1ad163660e1a.zip |
[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 <yxzhang@cloudera.com>
Closes #16412 from cnZach/SPARK-19006.
-rw-r--r-- | docs/configuration.md | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/docs/configuration.md b/docs/configuration.md index 39bfb3a05b..bd67144007 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> |