Impala Public Jenkins has submitted this change and it was merged. ( http://gerrit.cloudera.org:8080/17645 )
Change subject: IMPALA-5476: Fix catalogd restart brings stale metadata ...................................................................... IMPALA-5476: Fix catalogd restart brings stale metadata ImpaladCatalog#updateCatalog() doesn't trigger a full topic update request when detecting catalogServiceId changes. It just updates the local catalogServiceId and throws an exception to abort applying the DDL/DML results. This causes a problem when catalogd is restarted and the DDL/DML is executed on the restarted instance. In this case, only the local catalogServiceId is updated to the latest. The local catalog remains stale. Then when dealing with the following updates from statestore, the catalogServiceId always matches, so updates will be applied without exceptions. However, the catalog objects usually won't be updated since they have higher versions (from the old catalogd instance) than those in the update. This brings the local catalog out of sync until the catalog version of the new catalogd grows larger enough. Note that in dealing with the catalog updates from statestore, if the catalogServiceId unmatches, impalad will request a full topic update. See more in ImpalaServer::CatalogUpdateCallback(). This patch fixes this issue by checking the catalogServiceId before invoking UpdateCatalogCache() of FE. If catalogServiceId doesn't match the one in the DDL/DML result, wait until it changes. The following update from statestore will change it and unblocks the DDL/DML thread. Testing add several tests in tests/custom_cluster/test_restart_services.py Change-Id: I9fe25f5a2a42fb432e306ef08ae35750c8f3c50c Reviewed-on: http://gerrit.cloudera.org:8080/17645 Reviewed-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com> Tested-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com> --- M be/src/service/impala-server.cc M tests/custom_cluster/test_restart_services.py 2 files changed, 150 insertions(+), 13 deletions(-) Approvals: Impala Public Jenkins: Looks good to me, approved; Verified -- To view, visit http://gerrit.cloudera.org:8080/17645 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: merged Gerrit-Change-Id: I9fe25f5a2a42fb432e306ef08ae35750c8f3c50c Gerrit-Change-Number: 17645 Gerrit-PatchSet: 28 Gerrit-Owner: liuyao <liu...@sensorsdata.cn> Gerrit-Reviewer: Aman Sinha <amsi...@cloudera.com> Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com> Gerrit-Reviewer: Quanlong Huang <huangquanl...@gmail.com> Gerrit-Reviewer: Thomas Tauber-Marshall <tmarsh...@cloudera.com> Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com> Gerrit-Reviewer: Vihang Karajgaonkar <vih...@cloudera.com> Gerrit-Reviewer: Wenzhe Zhou <wz...@cloudera.com> Gerrit-Reviewer: Zoltan Borok-Nagy <borokna...@cloudera.com> Gerrit-Reviewer: liuyao <liu...@sensorsdata.cn>
