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Posted to commits@kafka.apache.org by gu...@apache.org on 2018/05/30 18:04:10 UTC
[kafka] branch trunk updated: Update doc of curried joins and
aggregates (#5053)
This is an automated email from the ASF dual-hosted git repository.
guozhang pushed a commit to branch trunk
in repository https://gitbox.apache.org/repos/asf/kafka.git
The following commit(s) were added to refs/heads/trunk by this push:
new 1e0793c Update doc of curried joins and aggregates (#5053)
1e0793c is described below
commit 1e0793c4cea44368b0fa07e361a27ad638136448
Author: Joan Goyeau <jo...@goyeau.com>
AuthorDate: Wed May 30 19:03:58 2018 +0100
Update doc of curried joins and aggregates (#5053)
Reviewers: Guozhang Wang <wa...@gmail.com>
---
docs/streams/developer-guide/dsl-api.html | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/docs/streams/developer-guide/dsl-api.html b/docs/streams/developer-guide/dsl-api.html
index 4c76c5e..e65f726 100644
--- a/docs/streams/developer-guide/dsl-api.html
+++ b/docs/streams/developer-guide/dsl-api.html
@@ -3248,9 +3248,7 @@ val userRegionsTable: KTable[String, String] = builder.table(userRegionsTopic)
// All of them are taken care of by the implicit SerDes imported by DefaultSerdes
val clicksPerRegion: KTable[String, Long] =
userClicksStream
- .leftJoin(userRegionsTable,
- (clicks: Long, region: String) =>
- (if (region == null) "UNKNOWN" else region, clicks))
+ .leftJoin(userRegionsTable)((clicks, region) => (if (region == null) "UNKNOWN" else region, clicks))
.map((_, regionWithClicks) => regionWithClicks)
.groupByKey
.reduce(_ + _)
@@ -3290,7 +3288,7 @@ val clicksPerRegion: KTable[String, Long] =
userClicksStream
// Join the stream against the table.
- .leftJoin(userRegionsTable, (clicks: UserClicks, region: String) => (if (region == null) "UNKNOWN" else region, clicks.clicks))
+ .leftJoin(userRegionsTable)((clicks, region) => (if (region == null) "UNKNOWN" else region, clicks.clicks))
// Change the stream from <user> -> <region, clicks> to <region> -> <clicks>
.map((_, regionWithClicks) => regionWithClicks)
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