fileChannel always reached it's capacity

[Bean Edwards]

I use hdfsSink and fileChannel, it seems hdfsSink consume too slow.here is
my configuration:
...
agent1.channels.thrift_ch2.capacity = 200000000
agent1.channels.thrift_ch2.transactionCapacity = 100000
...
agent1.sinks.hdfsSink.hdfs.batchSize = 100000
agent1.sinks.hdfsSink.hdfs.threadsPoolSize = 40

very appreciate for guiding ！！！