August 2015
Intermediate to advanced
312 pages
7h 28m
Japanese
Content preview from 初めてのSpark
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212
10 章 Spark Streaming
10-41
FlumeUtils
Scala
ム
sink
val events = FlumeUtils.createPollingStream(ssc, receiverHostname, receiverPort)
10-42
FlumeUtils
Java
ム
sink
JavaDStream<SparkFlumeEvent> events = FlumeUtils.createPollingStream(ssc,
receiverHostname, receiverPort)
どちらの場合も、
DStream
は
SparkFlumeEvents
（
https://spark.apache.org/docs/latest/api/
java/org/apache/spark/streaming/flume/SparkFlumeEvent.html
）で構成されます。下位層の
AvroFlumeEvent
には、
event
を通じてアクセスできます。イベントの本体が
UTF-8
の文字列であ
れば、その内容は
10-43
のようにして取得できます。
10-43
Scala
SparkFlumeEvent
// Flume
のイベントは
UTF-8
のログの行だと仮定する
val lines = events.map{e => new String(e.event.getBody().array(), "UTF-8")} ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.