<s>
Apache	B-Application
Pinot	I-Application
is	O
a	O
column-oriented	B-General_Concept
,	O
open-source	B-Application
,	O
distributed	B-Operating_System
data	B-General_Concept
store	I-General_Concept
written	O
in	O
Java	B-Language
.	O
</s>
<s>
Pinot	B-Application
is	O
designed	O
to	O
execute	O
OLAP	B-Application
queries	O
with	O
low	O
latency	O
.	O
</s>
<s>
The	O
name	O
Pinot	B-Application
comes	O
from	O
the	O
Pinot	B-Application
grape	O
vines	O
that	O
are	O
pressed	O
into	O
liquid	O
that	O
is	O
used	O
to	O
produce	O
a	O
variety	O
of	O
different	O
wines	O
.	O
</s>
<s>
Pinot	B-Application
was	O
first	O
created	O
at	O
LinkedIn	B-Application
after	O
the	O
engineering	O
staff	O
determined	O
that	O
there	O
were	O
no	O
off	O
the	O
shelf	O
solutions	O
that	O
met	O
the	O
social	O
networking	O
site	O
's	O
requirements	O
like	O
predictable	O
low	O
latency	O
,	O
data	O
freshness	O
in	O
seconds	O
,	O
fault	O
tolerance	O
and	O
scalability	O
.	O
</s>
<s>
Pinot	B-Application
is	O
used	O
in	O
production	O
by	O
technology	O
companies	O
such	O
as	O
Uber	B-Application
,	O
Microsoft	O
,	O
and	O
Factual	O
.	O
</s>
<s>
Pinot	B-Application
was	O
started	O
as	O
an	O
internal	O
project	O
at	O
LinkedIn	B-Application
in	O
2013	O
to	O
power	O
a	O
variety	O
of	O
user-facing	O
and	O
business-facing	O
products	O
.	O
</s>
<s>
The	O
first	O
analytics	O
product	O
at	O
LinkedIn	B-Application
to	O
use	O
Pinot	B-Application
was	O
a	O
redesign	O
of	O
the	O
social	O
networking	O
site	O
's	O
feature	O
that	O
allows	O
members	O
to	O
see	O
who	O
has	O
viewed	O
their	O
profile	O
in	O
real-time	O
.	O
</s>
<s>
The	O
project	O
was	O
open-sourced	O
in	O
June	O
2015	O
under	O
an	O
Apache	O
2.0	O
license	O
and	O
was	O
donated	O
to	O
the	O
Apache	O
Software	O
Foundation	O
by	O
LinkedIn	B-Application
in	O
June	O
2019	O
.	O
</s>
<s>
Pinot	B-Application
uses	O
Apache	B-Language
Helix	I-Language
for	O
cluster	O
management	O
.	O
</s>
<s>
Helix	O
is	O
embedded	O
as	O
an	O
agent	O
within	O
the	O
different	O
components	O
and	O
uses	O
Apache	B-Language
ZooKeeper	I-Language
for	O
coordination	O
and	O
maintaining	O
the	O
overall	O
cluster	O
state	O
and	O
health	O
.	O
</s>
<s>
All	O
Pinot	B-Application
servers	O
and	O
brokers	O
are	O
managed	O
by	O
Helix	O
.	O
</s>
<s>
Helix	O
is	O
a	O
generic	O
cluster	O
management	O
framework	O
to	O
manage	O
partitions	O
and	O
replicas	O
in	O
a	O
distributed	B-Operating_System
system	O
.	O
</s>
<s>
Pinot	B-Application
leverages	O
Apache	B-Language
Helix	I-Language
for	O
cluster	O
management	O
.	O
</s>
<s>
Helix	O
is	O
a	O
cluster	O
management	O
framework	O
to	O
manage	O
replicated	O
,	O
partitioned	O
resources	O
in	O
a	O
distributed	B-Operating_System
system	O
.	O
</s>
<s>
Helix	O
uses	O
Zookeeper	B-Language
to	O
store	O
cluster	O
state	O
and	O
metadata	O
.	O
</s>
<s>
Pinot	B-Application
shares	O
similar	O
features	O
with	O
comparable	O
OLAP	B-Application
datastores	B-General_Concept
,	O
such	O
as	O
Apache	B-Application
Druid	I-Application
.	O
</s>
<s>
Like	O
Druid	B-Application
,	O
Pinot	B-Application
is	O
a	O
column-oriented	B-General_Concept
database	I-General_Concept
with	O
various	O
compression	O
schemes	O
such	O
as	O
Run	B-Algorithm
Length	I-Algorithm
and	O
Fixed-Bit	B-Algorithm
Length	I-Algorithm
.	O
</s>
<s>
Pinot	B-Application
supports	O
pluggable	O
indexing	B-Data_Structure
technologies	I-Data_Structure
-	O
Sorted	O
Index	O
,	O
Bitmap	B-Data_Structure
Index	I-Data_Structure
,	O
Inverted	B-Algorithm
Index	I-Algorithm
,	O
Star-Tree	O
Index	O
,	O
and	O
Range	O
Index	O
,	O
which	O
are	O
what	O
primarily	O
differentiates	O
Pinot	B-Application
from	O
other	O
OLAP	B-Application
datastores	B-General_Concept
.	O
</s>
<s>
Pinot	B-Application
supports	O
near	O
real-time	O
ingestion	O
from	O
streams	O
such	O
as	O
Kafka	B-Language
,	O
AWS	B-Application
Kinesis	O
and	O
batch	B-General_Concept
ingestion	O
from	O
sources	O
such	O
as	O
Hadoop	B-Application
,	O
S3	B-General_Concept
,	O
Azure	B-Application
,	O
GCS	B-General_Concept
.	O
</s>
<s>
Like	O
most	O
other	O
OLAP	B-Application
datastores	B-General_Concept
and	O
data	O
warehousing	O
solutions	O
,	O
Pinot	B-Application
supports	O
a	O
SQL-like	O
query	O
language	O
that	O
supports	O
selection	O
,	O
aggregation	O
,	O
filtering	O
,	O
group	O
by	O
,	O
order	O
by	O
,	O
distinct	O
queries	O
on	O
data	O
.	O
</s>
