It is not thread safe in 0.9.4. It is thread safe in later versions (0.10.0 onwards)
Excuse typos On Feb 16, 2016 11:01 PM, "Evgeniy Khyst" <evgeniy.kh...@gmail.com> wrote: > Hello! > > I'm currently using Apache Storm 0.9.4 and have question about > thread-safety of *SpoutOutputCollector*. Is it safe to call *emit *method > from different threads? > In documentation (http://storm.apache.org/documentation/Concepts.html) it > is said that *OutputCollector *is not thread-safe, and all emits, acks, > and fails must happen on the same thread. > But in Javadoc ( > https://storm.apache.org/apidocs/backtype/storm/spout/ISpout.html) it is > said that *SpoutOutputCollector* is thread-safe and should be saved as an > instance variable of this spout object. > Please, provide a little bit more details about thread-safety of > *SpoutOutputCollector* and validity of calling *emit *method from > different threads. > > Thanks. > > Best regards, > Evgeniy >
