Andrew Wong has uploaded this change for review. ( http://gerrit.cloudera.org:8080/11428
Change subject: KUDU-2463 pt 3: don't scan if MVCC hasn't moved ...................................................................... KUDU-2463 pt 3: don't scan if MVCC hasn't moved In cases when a tablet bootstrap yields an MvccManager whose clean time has not been advanced (e.g. if there are no write ops in the WAL), and the tablet has otherwise not bumped its MVCC timestamps (e.g. if it has not yet elected a leader), a scan (whose correctness depends on the MvccManager to determine what transactions have been applied) will return incorrect results. In the same way that we prevent compactions from occuring if MVCC's timestamps have not been moved, this patch prevents incorrect results from being returend from a scan, forcing it to be retried elsewhere. Tests are added to attempt to scan in this state, verifying that we get an error. Change-Id: Idc0f77673e1f04a34ab1f5c1930bbaa2498b39bf --- M src/kudu/integration-tests/timestamp_advancement-itest.cc M src/kudu/mini-cluster/external_mini_cluster.cc M src/kudu/mini-cluster/external_mini_cluster.h M src/kudu/mini-cluster/internal_mini_cluster.cc M src/kudu/mini-cluster/internal_mini_cluster.h M src/kudu/mini-cluster/mini_cluster.h M src/kudu/tablet/mvcc.cc M src/kudu/tablet/mvcc.h M src/kudu/tools/kudu-ts-cli-test.cc M src/kudu/tserver/tablet_service.cc 10 files changed, 176 insertions(+), 15 deletions(-) git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/28/11428/1 -- To view, visit http://gerrit.cloudera.org:8080/11428 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: kudu Gerrit-Branch: master Gerrit-MessageType: newchange Gerrit-Change-Id: Idc0f77673e1f04a34ab1f5c1930bbaa2498b39bf Gerrit-Change-Number: 11428 Gerrit-PatchSet: 1 Gerrit-Owner: Andrew Wong <aw...@cloudera.com>
