hadoop - 使用内存 channel 增加水槽中的文件大小

Question

下面是我的水槽配置文件。即使在更改 rollInterval 和 rollSize 之后，也只有 10 个事件被写入，控制台也显示 rollCount=10 和 events=10。我还尝试将 rollCount 增加到 1000，但输出没有变化。谁能建议增加用 hdfs 写入的文件大小。下面的 conf 文件有什么问题？

#naming components 

NetAgent.sources = NetCat_1 NetCat_2
NetAgent.sinks = HDFS
NetAgent.channels = MemChannel


NetAgent.sources.NetCat_1.type = netcat
NetAgent.sources.NetCat_1.bind = localhost
NetAgent.sources.NetCat_1.port = 8671

NetAgent.sources.NetCat_2.type = netcat
NetAgent.sources.NetCat_2.bind = localhost
NetAgent.sources.NetCat_2.port = 8672


NetAgent.sinks.HDFS.type = hdfs
NetAgent.sinks.HDFS.hdfs.path = file path here
NetAgent.sinks.HDFS.hdfs.filePrefix = test
NetAgent.sinks.HDFS.hdfs.rollSize = 67108864
NetAgent.sinks.HDFS.hdfs.rollInterval = 3600
NetAgent.sinks.HDFS.rollCount = 0
NetAgent.sinks.HDFS.hdfs.batchSize = 10000
NetAgent.sinks.HDFS.hdfs.writeFormat = Text
NetAgent.sinks.HDFS.hdfs.fileType = DataStream


NetAgent.channels.MemChannel.type = memory
NetAgent.channels.MemChannel.capacity = 20000
NetAgent.channels.MemChannel.transactionCapacity = 20000


NetAgent.sources.NetCat_1.channels = MemChannel
NetAgent.sources.NetCat_2.channels = MemChannel
NetAgent.sinks.HDFS.channel = MemChannel

控制台记录为

(SinkRunner-PollingRunner-DefaultSinkProcessor) [DEBUg-org.apache.flume.sink.hdfs.BucketWriter.shouldRotate(BucketWriter.java)]
rolling: rollCount: 10, events: 10

the image shows the files written in HDFS

Answer 1

您忘记将 hdfs 添加到您的 rollCount 配置中。它使用默认值 10，因为它看不到您的配置。请注意，您的 HDFS 配置是:

NetAgent.sinks.HDFS.type = hdfs
NetAgent.sinks.HDFS.hdfs.rollSize = 67108864
NetAgent.sinks.HDFS.hdfs.rollInterval = 3600
NetAgent.sinks.HDFS.rollCount = 0
NetAgent.sinks.HDFS.hdfs.batchSize = 10000
NetAgent.sinks.HDFS.hdfs.writeFormat = Text
NetAgent.sinks.HDFS.hdfs.fileType = DataStream

在 rollCount 行中，它需要是:

NetAgent.sinks.HDFS.hdfs.rollCount = 0

这将覆盖默认的 rollCount 并且您的 Flume 代理将按您希望的方式运行。