[英]Flume to HDFS split a file to lots of files
我正在尝试将700 MB的日志文件从flume
传输到HDFS
。 我已经配置了flume
剂如下:
...
tier1.channels.memory-channel.type = memory
...
tier1.sinks.hdfs-sink.channel = memory-channel
tier1.sinks.hdfs-sink.type = hdfs
tier1.sinks.hdfs-sink.path = hdfs://***
tier1.sinks.hdfs-sink.fileType = DataStream
tier1.sinks.hdfs-sink.rollSize = 0
源是一个spooldir
,通道是memory
,接收器是hdfs
。
我也尝试发送一个1MB的文件,并将它分成1000个文件,每个文件大小为1KB。 我注意到的另一件事是转移很慢,1MB大约需要1分钟。 难道我做错了什么?
您还需要禁用rolltimeout,这是通过以下设置完成的:
tier1.sinks.hdfs-sink.hdfs.rollCount = 0
tier1.sinks.hdfs-sink.hdfs.rollInterval = 300
rollcount防止翻滚,rollIntervall此处设置为300秒,将其设置为0将禁用超时。 您将不得不选择要转换的机制,否则Flume将仅在关闭时关闭文件。
默认值如下:
hdfs.rollInterval 30 Number of seconds to wait before rolling current file (0 = never roll based on time interval)
hdfs.rollSize 1024 File size to trigger roll, in bytes (0: never roll based on file size)
hdfs.rollCount 10 Number of events written to file before it rolled (0 = never roll based on number of events)
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