Class | Description |
---|---|
CountAggregatorBolt |
A bolt to count how many different words
|
DoubleTuplesBolt |
This bolt will doubly emit what it receives.
|
IdentityBolt | |
IncrementBolt |
A bolt will increase the field "received" when executes once.
|
JSONTweetFilterBolt |
A bolt that read a tweet in json format, and then filter out the tweets, whose
the top-level property given is equal to the value given, and emit it.
|
LocalWriteBolt |
Given a local file path, this bolt will emit every line of received in String format, as well as write
every line to the local file.
|
MapAggregatorBolt |
The bolt receives map, and put all entries in received map into a buffer map,
and emit this buffer map when it receives all the maps (in finishBatch()).
|
PartialUniquerBolt |
The bolt will maintain a map.
|
TweetPropertyBolt |
A bolt that read a tweet in json format, and then filter out the top-level property given and
emit it.
|
WordCountBolt |
CounBolt will count the number different words received, and finally output the number
|