The UPDATE_MODE pass-through specifies which type of data update is being performed by the pipeline.
The UPDATE_MODE pass-through is optional. The three values for this
pass-through are
STATELESS
,
STATEFUL
, and
PARTIAL
. Note that if this pass-through is
omitted, the term extractor performs a
STATELESS
update.
Keep the following notes in mind when using the update modes:
STATELESS
mode is recommended for sites that perform baseline updates exclusively.STATEFUL
mode is recommended for sites that implement partial updates. That is, the baseline update pipeline will useSTATEFUL
mode while the partial update pipeline will usePARTIAL
mode.The
STATELESS
andSTATEFUL
modes do not need pre-existing state files in order to run.The
PARTIAL
mode does require the existence of the term state files. Therefore, aSTATEFUL
update must be performed before aPARTIAL
update.