<s>
Apache	B-Application
Heron	I-Application
is	O
a	O
distributed	O
stream	B-Application
processing	I-Application
engine	O
developed	O
at	O
Twitter	B-Application
.	O
</s>
<s>
According	O
to	O
the	O
creators	O
at	O
Twitter	B-Application
,	O
the	O
scale	O
and	O
diversity	O
of	O
Twitter	B-Application
data	O
has	O
increased	O
,	O
and	O
Heron	B-Application
is	O
a	O
real-time	O
analytics	O
platform	O
to	O
process	O
streaming	O
.	O
</s>
<s>
Heron	B-Application
is	O
API	O
compatible	O
with	O
Apache	B-General_Concept
Storm	I-General_Concept
.	O
</s>
