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There
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are
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several
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disadvantages
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to
...
the
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original
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approach
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to
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bursting.
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First,
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it
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is
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very
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difficult
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to
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scale
...
the
...
bursting
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to
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large
...
datasets
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because
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a
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single
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query
...
or
...
dataset
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does
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not
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lend
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itself
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to
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clustering
...
or
...
distributed
...
processing.
...
Second,
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large
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datasets
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result
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in
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a
...
large
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single
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process
...
that
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cannot
...
be
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controlled
...
easily.
...
Finally,
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it
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is
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difficult
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to
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introduce
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complex
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logic
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or
...
variations
...
at
...
the
...
level
...
of
...
the
...
individual
...
report.
...
Pentaho
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Bursting's
...
innovative
...
approach,
...
Re-usable
...
template,
...
used
...
to
...
define
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a
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Burst
...
Rule
...
and
...
a
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Burst
...
Process.
...
The
...
Burst
...
Rule
...
The
...
Burst
...
Rule
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is
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used
...
to
...
identify
...
the
...
particular
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cases,
...
situations,
...
or
...
triggers
...
that
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require
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content
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to
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be
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generated
...
or
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information
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to
...
be
...
delivered.
...
For
...
example,
...
it
...
could
...
determine
...
departments
...
that
...
have
...
exceeded
...
budgets,
...
employees
...
that
...
have
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too
...
much
...
overtime,
...
suppliers
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with
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too
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many
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incorrect
...
deliveries
...
etc.
...
This
...
rule
...
can
...
be
...
a
...
simple
...
query
...
or
...
can
...
be
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a
...
complex
...
workflow
...
involving
...
multiple
...
business
...
rules
...
and
...
multiple
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data-sources.
...
The
...
Burst
...
Rule
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typically
...
iterates
...
over
...
the
...
cases
...
identified
...
by
...
the
...
business
...
rules
...
and
...
processes
...
each
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case
...
one
...
at
...
a
...
time.
...
The
...
entire
...
dataset
...
needed
...
to
...
run
...
all
...
the
...
rules
...
and
...
generate
...
the
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content
...
is
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never
...
read
...
into
...
memory
...
at
...
one
...
time.
...
To
...
distribute
...
and
...
cluster
...
the
...
bursting
...
process
...
messaging
...
(JMS)
...
can
...
be
...
used
...
by
...
the
...
Burst
...
Rule
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to
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broadcast
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each
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case
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in
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a
...
JMS
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message
...
for
...
a
...
cluster
...
of
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reporting
...
servers
...
to
...
work
...
on.
...
A
...
persistent
...
message
...
queue
...
guarantees
...
delivery
...
and
...
ensures
...
that
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the
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Burst
...
Process
...
can
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be
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resumed
...
after
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hardware
...
failure.
...
The
...
Burst
...
Process
...
The
...
Burst
...
Process
...
is
...
a
...
workflow
...
that
...
generates
...
content
...
and
...
saves
...
or
...
delivers
...
it.
...
This
...
process
...
is
...
designed
...
to
...
handle
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a
...
single
...
situation
...
identified
...
by
...
the
...
Burst
...
Rule.
...
The
...
process
...
receives
...
parameters
...
from
...
the
...
Burst
...
Rule
...
and
...
can
...
use
...
those
...
parameters
...
to
...
customize
...
the
...
process
...
and
...
the
...
content
...
that
...
is
...
generated.
...
For
...
example,
...
the
...
process
...
could
...
use
...
a
...
parameter
...
such
...
as
...
the
...
department
...
to
...
generate
...
a
...
different
...
query,
...
select
...
a
...
different
...
report
...
template,
...
or
...
use
...
a
...
web
...
service
...
to
...
determine
...
the
...
recipient(s)
...
for
...
the
...
information.