Yongxi Zhang created FLUME-3106:
-----------------------------------
Summary: When batchSize of sink greater than transactionCapacity
of Memory Channel, Flume can produce endless data
Key: FLUME-3106
URL: https://issues.apache.org/jira/browse/FLUME-3106
Project: Flume
Issue Type: Bug
Components: Channel
Affects Versions: 1.7.0
Reporter: Yongxi Zhang
Fix For: 1.8.0
Flume can produce endless data when use this following config:
{panel}
agent.sources = src1
agent.sinks = sink1
agent.channels = ch2
agent.sources.src1.type = spooldir
agent.sources.src1.channels = ch2
agent.sources.src1.spoolDir = /home/kafka/flumeSpooldir
agent.sources.src1.fileHeader = false
agent.sources.src1.batchSize = 5
agent.channels.ch2.type=memory
agent.channels.ch2.capacity=100
agent.channels.ch2.transactionCapacity=5
agent.sinks.sink1.type = hdfs
agent.sinks.sink1.channel = ch2
agent.sinks.sink1.hdfs.path = hdfs://kafka1:9000/flume/
agent.sinks.sink1.hdfs.rollInterval=1
agent.sinks.sink1.hdfs.fileType = DataStream
agent.sinks.sink1.hdfs.writeFormat = Text
agent.sinks.sink1.hdfs.batchSize = 10
{panel}
And there are Exceptions like this:
{panel}
org.apache.flume.ChannelException: Take list for MemoryTransaction, capacity 5
full, consider committing more frequently, increasing capaci
ty, or increasing thread count
at
org.apache.flume.channel.MemoryChannel$MemoryTransaction.doTake(MemoryChannel.java:99)
at
org.apache.flume.channel.BasicTransactionSemantics.take(BasicTransactionSemantics.java:113)
at
org.apache.flume.channel.BasicChannelSemantics.take(BasicChannelSemantics.java:95)
at
org.apache.flume.sink.hdfs.HDFSEventSink.process(HDFSEventSink.java:362)
at
org.apache.flume.sink.DefaultSinkProcessor.process(DefaultSinkProcessor.java:67)
at org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:145)
at java.lang.Thread.run(Thread.java:745)
17/06/09 09:48:04 ERROR flume.SinkRunner: Unable to deliver event. Exception
follows.
org.apache.flume.EventDeliveryException: org.apache.flume.ChannelException:
Take list for MemoryTransaction, capacity 5 full, consider comm
itting more frequently, increasing capacity, or increasing thread count
at
org.apache.flume.sink.hdfs.HDFSEventSink.process(HDFSEventSink.java:451)
at
org.apache.flume.sink.DefaultSinkProcessor.process(DefaultSinkProcessor.java:67)
at org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:145)
at java.lang.Thread.run(Thread.java:745)
{panel}
When takeList of Memory Channel is full，there is a ChannelException will be
throwed,The event of takeList has been writed by the sink and roll back to the
queue of memoryChannel at the same time，it is not reasonable.
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