apache flume hdfs sink 可以接受动态路径写入吗？

Question

我是 apache flume 的新手。
我正在尝试查看如何获取 json（作为 http 源），对其进行解析并根据内容将其存储到 hdfs 上的动态路径中。
例如：
如果 json 是：

[{   
  "field1" : "value1",
  "field2" : "value2"
}]

那么 hdfs 路径将是：
/some-default-root-path/value1/value2/some-value-name-file
有这样的水槽配置可以让我这样做吗？

这是我当前的配置（通过http接受一个json，并根据时间戳将其存储在一个路径中）：

#flume.conf: http source, hdfs sink

# Name the components on this agent
a1.sources = r1
a1.sinks = k1
a1.channels = c1

# Describe/configure the source
a1.sources.r1.type =  org.apache.flume.source.http.HTTPSource
a1.sources.r1.port = 9000
#a1.sources.r1.handler = org.apache.flume.http.JSONHandler

# Describe the sink
a1.sinks.k1.type = hdfs
a1.sinks.k1.hdfs.path = /user/uri/events/%y-%m-%d/%H%M/%S
a1.sinks.k1.hdfs.filePrefix = events-
a1.sinks.k1.hdfs.round = true
a1.sinks.k1.hdfs.roundValue = 10
a1.sinks.k1.hdfs.roundUnit = minute

# Use a channel which buffers events in memory
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000
a1.channels.c1.transactionCapacity = 100

# Bind the source and sink to the channel
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1

谢谢！

Answer 1

解决方案在水槽中documentation for the hdfs sink：

这是修改后的配置：

#flume.conf: http source, hdfs sink

# Name the components on this agent
a1.sources = r1
a1.sinks = k1
a1.channels = c1

# Describe/configure the source
a1.sources.r1.type =  org.apache.flume.source.http.HTTPSource
a1.sources.r1.port = 9000
#a1.sources.r1.handler = org.apache.flume.http.JSONHandler

# Describe the sink
a1.sinks.k1.type = hdfs
a1.sinks.k1.hdfs.path = /user/uri/events/%{field1}
a1.sinks.k1.hdfs.filePrefix = events-
a1.sinks.k1.hdfs.round = true
a1.sinks.k1.hdfs.roundValue = 10
a1.sinks.k1.hdfs.roundUnit = minute

# Use a channel which buffers events in memory
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000
a1.channels.c1.transactionCapacity = 100

# Bind the source and sink to the channel
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1  

和卷曲：

curl -X POST -d '[{  "headers" : {           "timestamp" : "434324343", "host" :"random_host.example.com", "field1" : "val1"            },  "body" : "random_body"  }]' localhost:9000