flume六：Event Serializers介紹

flume默認提供以下 Serializers：

Body Text Serializer：

a1.sinks = k1
a1.sinks.k1.type = file_roll
a1.sinks.k1.channel = c1
a1.sinks.k1.sink.directory = /var/log/flume
a1.sinks.k1.sink.serializer = text
a1.sinks.k1.sink.serializer.appendNewline = false


“Flume Event” Avro Event Serializer：
a1.sinks.k1.type = hdfs
a1.sinks.k1.channel = c1
a1.sinks.k1.hdfs.path = /flume/events/%y-%m-%d/%H%M/%S
a1.sinks.k1.serializer = avro_event
a1.sinks.k1.serializer.compressionCodec = snappy


Avro Event Serializer：
a1.sinks.k1.type = hdfs
a1.sinks.k1.channel = c1
a1.sinks.k1.hdfs.path = /flume/events/%y-%m-%d/%H%M/%S
a1.sinks.k1.serializer = org.apache.flume.sink.hdfs.AvroEventSerializer$Builder
a1.sinks.k1.serializer.compressionCodec = snappy
a1.sinks.k1.serializer.schemaURL = hdfs://namenode/path/to/schema.avsc