Returns the event operation associated with the data dequeued
from the event queue. This should be called repeatedly after
pollEvents2() populates the
queue, until the event queue is empty.
Added in NDB 7.4.3, this method supersedes
nextEvent(), which is now
deprecated and subject to removal in a future NDB Cluster release.
After calling this method, use
determine the epoch, then check the type of the returned event
Handling must be provided for all exceptional
TableEvent types, including
TE_OUT_OF_MEMORY (also introduced in NDB
7.4.3). No other
NdbEventOperation methods than
the two named here should be called for an exceptional epoch.
Returning empty epochs (
TE_EMPTY) may flood
applications when data nodes are idle. If this is not desirable,
applications should filter out any empty epochs.
NdbEventOperation* nextEvent2 ( void )
This method returns an
representing the next event in an event queue, if there is such
an event. If there is no event in the queue, it returns