Zhou Xu has uploaded a new patch set (#2). ( http://gerrit.cloudera.org:8080/14846 )
Change subject: IMPALA-9195: Using multithreaded execution to accelerate 'show tables/databases' ...................................................................... IMPALA-9195: Using multithreaded execution to accelerate 'show tables/databases' If Sentry authorization is enabled, users with multi group-policies will take time to get the result of 'show tables/databases'. It seems that ResourceAuthorizationProvider.hasAccess performs bad for users with complex group-policies. This patch provides a config option 'num_check_access_threads' to accelerate 'show tables/databases' by using multithreading. The default value of 'num_check_access_threads' is 16. Change-Id: I860e0d18afa0421665f8b3b1c5561d6bdacc5e96 --- M be/src/common/global-flags.cc M be/src/util/backend-gflag-util.cc M common/thrift/BackendGflags.thrift M fe/src/main/java/org/apache/impala/service/BackendConfig.java M fe/src/main/java/org/apache/impala/service/Frontend.java 5 files changed, 97 insertions(+), 18 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/46/14846/2 -- To view, visit http://gerrit.cloudera.org:8080/14846 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: newpatchset Gerrit-Change-Id: I860e0d18afa0421665f8b3b1c5561d6bdacc5e96 Gerrit-Change-Number: 14846 Gerrit-PatchSet: 2 Gerrit-Owner: Zhou Xu <peter.cose....@gmail.com> Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com> Gerrit-Reviewer: Quanlong Huang <huangquanl...@gmail.com> Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com> Gerrit-Reviewer: Vihang Karajgaonkar <vih...@cloudera.com> Gerrit-Reviewer: Zhou Xu <peter.cose....@gmail.com>
