-
Notifications
You must be signed in to change notification settings - Fork 28.1k
/
KafkaSink.scala
42 lines (36 loc) · 1.5 KB
/
KafkaSink.scala
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.spark.sql.kafka010
import java.{util => ju}
import org.apache.spark.internal.Logging
import org.apache.spark.sql.DataFrame
import org.apache.spark.sql.execution.streaming.Sink
private[kafka010] class KafkaSink(
executorKafkaParams: ju.Map[String, Object],
topic: Option[String]) extends Sink with Logging {
@volatile private var latestBatchId = -1L
override def toString(): String = "KafkaSink"
override def addBatch(batchId: Long, data: DataFrame): Unit = {
if (batchId <= latestBatchId) {
logInfo(s"Skipping already committed batch $batchId")
} else {
KafkaWriter.write(data.queryExecution,
executorKafkaParams, topic)
latestBatchId = batchId
}
}
}