Flume采集数据到HDFS时，生成的文件中，开头信息有乱码

Flume版本为Flume-ng 1.5，配置文件如下。在生成的HDFS文件中，总是有“
SEQ!org.apache.hadoop.io.LongWritable"org.apache.hadoop.io.BytesWritable??H謺NSA???y”信息，
配置文件如下，
# Name the components on this agent
a1.sources = r1
a1.sinks = k1
a1.channels = c1


# Describe/configure the source
a1.sources.r1.type = spooldir
a1.sources.r1.fileHeader = true
#a1.sources.r1.deserializer.outputCharset=UTF-8
a1.sources.r1.spoolDir = /opt/personal/file/access
a1.sources.r1.channels = c1 




# Describe the sink
a1.sinks.k1.type = hdfs
a1.sinks.k1.channel = c1
a1.sinks.k1.hdfs.path = hdfs://node143:9000/access/events
a1.sinks.k1.hdfs.filePrefix = access
a1.sinks.k1.hdfs.fileSuffix=.log
#a1.sinks.k1.hdfs.hdfs.writeFormat= Text
a1.sinks.k1.hdfs.round = true
a1.sinks.k1.hdfs.roundValue = 10
a1.sinks.k1.hdfs.roundUnit = minute


# Use a channel which buffers events in memory
a1.channels.c1.type = memory
a1.channels.c1.capacity = 10000
a1.channels.c1.transactionCapacity = 1000


# Bind the source and sink to the channel
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1


翻看Flume文档，发现，HdfsEventSink中，hdfs.fileType默认为SequenceFile，将其改为DataStream就可以按照采集的文件原样输入到hdfs，加一行a1.sinks.k1.hdfs.fileType=DataStream