WHBANG commented on code in PR #1019:
URL: https://github.com/apache/incubator-pegasus/pull/1019#discussion_r907295907
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java-client/src/main/java/org/apache/pegasus/client/PegasusScanner.java:
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@@ -88,9 +88,31 @@ public PegasusScanner(
_needCheckHash = needCheckHash;
_incomplete = false;
_fullScan = fullScan;
+ _nextItem = null;
+ }
+
+ public boolean hasNext() throws PException {
+ synchronized (_nextItemLock) {
+ if (_incomplete) {
+ return false;
+ }
+ if (_rpcRunning && !_encounterError) {
+ return !_promises.isEmpty();
Review Comment:
when the rpc compeleted, the scan is not compeleted, but the key-value is
cached on the _kvs and promise queues, obtained in turn through next(), and
_promises.removeFirst()
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