Alexey Serbin has posted comments on this change. ( http://gerrit.cloudera.org:8080/17773 )
Change subject: KUDU-1260: Fix prefetching bug on Java scanner ...................................................................... Patch Set 11: (1 comment) I'd expect that with an alternative approach canBeIgnored() method would be gone, but it seems the that's not the case? http://gerrit.cloudera.org:8080/#/c/17773/11/java/kudu-client/src/main/java/org/apache/kudu/client/AsyncKuduScanner.java File java/kudu-client/src/main/java/org/apache/kudu/client/AsyncKuduScanner.java: http://gerrit.cloudera.org:8080/#/c/17773/11/java/kudu-client/src/main/java/org/apache/kudu/client/AsyncKuduScanner.java@671 PS11, Line 671: Deferred<RowResultIterator> prefetcherDeferred = client.scanNextRows(AsyncKuduScanner.this) : .addCallbacks(gotNextRow, nextRowErrback()); : if (!cachedPrefetcherDeferred.compareAndSet(null, prefetcherDeferred)) { : LOG.info("Skip one prefetching because two consecutive prefetching scan occurs"); : } Is this about to start concurrent data fetching anyways? Probably, that's not what we want, no? -- To view, visit http://gerrit.cloudera.org:8080/17773 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: kudu Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: I853a041d86c75ec196d7d4ff45af4673c5c5f5cd Gerrit-Change-Number: 17773 Gerrit-PatchSet: 11 Gerrit-Owner: Hongjiang Zhang <[email protected]> Gerrit-Reviewer: Alexey Serbin <[email protected]> Gerrit-Reviewer: Grant Henke <[email protected]> Gerrit-Reviewer: Hongjiang Zhang <[email protected]> Gerrit-Reviewer: Kudu Jenkins (120) Gerrit-Comment-Date: Thu, 09 Sep 2021 06:58:17 +0000 Gerrit-HasComments: Yes
