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  • Hadoop之Flume 记录

    出现这个错误是自己的粗心大意,解决:

    在配置flume-conf.properties文件时,source和channel的对应关系是:

    myAgentName.sources.mySourceName.channels = myChannelName

    myAgentName.sinks.mySinkName.channel = myChannelName

    注意其中的后缀,带s和不带s后缀。

    这也恰好说明

    source可以“流向”多个channel,而sink只能接收一个channel的“流入”。

    从channel的角度看:channel既可以接收多个source的“流入”,又可以“流向”多个sink

    例如多对多关系:

    对应的配置如下:

     1 # example.conf: A single-node Flume configuration
     2 
     3 # Name the components on this agent
     4 agent1.sources=sour1 s2 s3
     5 agent1.sinks=sink1 sink12 sink21 sink3
     6 agent1.channels=chan1 chan2 chan3
     7 
     8 # Describe/configure the source
     9 agent1.sources.sour1.type=netcat
    10 agent1.sources.sour1.bind=localhost
    11 agent1.sources.sour1.port=44444
    12 
    13 agent1.sources.s2.type=netcat
    14 agent1.sources.s2.bind=localhost
    15 agent1.sources.s2.port=44445
    16 
    17 agent1.sources.s3.type=netcat
    18 agent1.sources.s3.bind=localhost
    19 agent1.sources.s3.port=44446
    20 
    21 # Describe the sink
    22 agent1.sinks.sink1.type=logger
    23 agent1.sinks.sink12.type=logger
    24 agent1.sinks.sink21.type=logger
    25 agent1.sinks.sink3.type=logger
    26 
    27 # Use a channel which buffers events in memory
    28 agent1.channels.chan1.type=memory
    29 agent1.channels.chan1.capacity=1000
    30 #agent1.channels.chan1.transactionCapacity=100
    31 
    32 agent1.channels.chan2.type=memory
    33 agent1.channels.chan2.capacity=1000
    34 
    35 agent1.channels.chan3.type=memory
    36 agent1.channels.chan3.capacity=1000
    37 
    38 
    39 # Bind the source and sink to the channel
    40 agent1.sources.sour1.channels=chan1 chan2
    41 agent1.sources.s2.channels=chan2
    42 agent1.sources.s3.channels=chan2 chan3
    43 
    44 agent1.sinks.sink1.channel=chan1
    45 agent1.sinks.sink12.channel=chan1
    46 agent1.sinks.sink21.channel=chan2
    47 agent1.sinks.sink3.channel=chan3
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  • 原文地址:https://www.cnblogs.com/cnblogszs/p/10548837.html
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