Github user joshelser commented on a diff in the pull request:
https://github.com/apache/accumulo/pull/260#discussion_r120023630
--- Diff:
server/tserver/src/main/java/org/apache/accumulo/tserver/tablet/Tablet.java ---
@@ -746,16 +774,29 @@ Batch nextBatch(SortedKeyValueIterator<Key,Value>
iter, Range range, int num, Se
iter.next();
}
- if (iter.hasTop() == false) {
- endOfTabletReached = true;
- }
+ if (yield.hasYielded()) {
+ continueKey = new Key(yield.getPositionAndReset());
+ skipContinueKey = true;
+ if (!range.contains(continueKey)) {
+ throw new IOException("Underlying iterator yielded to a position
outside of its range: " + continueKey + " not in " + range);
+ }
- if (endOfTabletReached) {
- continueKey = null;
- }
+ log.debug("Scan yield detected at position " + continueKey);
--- End diff --
I'd appreciate that. As a suggestion: if there are multiple areas in which
you want to understand the "kinds" of yielding happening: just expose some more
metrics. Have a total, and some specific breakouts of the different lines (i
guess initial seek and next calls you're trying to differentiate?)
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