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FlushAttributes
Prototype: function FlushAttributes ()
Forces searchd to flush pending attribute updates
to disk, and blocks until completion. Returns a non-negative internal
“flush tag” on success. Returns -1 and sets an error message on error.
Introduced in version 1.10-beta.
Attribute values updated using UpdateAttributes()
API call are only kept in RAM until a so-called flush (which writes
the current, possibly updated attribute values back to disk). FlushAttributes()
call lets you enforce a flush. The call will block until searchd
finishes writing the data to disk, which might take seconds or even minutes
depending on the total data size (.spa file size). All the currently updated
indexes will be flushed.
Flush tag should be treated as an ever growing magic number that does not mean anything. It's guaranteed to be non-negative. It is guaranteed to grow over time, though not necessarily in a sequential fashion; for instance, two calls that return 10 and then 1000 respectively are a valid situation. If two calls to FlushAttrs() return the same tag, it means that there were no actual attribute updates in between them, and therefore current flushed state remained the same (for all indexes).
Usage example:
$status = $cl->FlushAttributes ();
if ( $status<0 )
print "ERROR: " . $cl->GetLastError();
