Hello Michael Ho, Thomas Marshall, Tim Armstrong, Bikramjeet Vig, Impala Public
Jenkins,
I'd like you to reexamine a change. Please visit
http://gerrit.cloudera.org:8080/13207
to look at the new patch set (#10).
Change subject: IMPALA-8460: Simplify cluster membership management
......................................................................
IMPALA-8460: Simplify cluster membership management
This change adds a class to track cluster membership called
ClusterMembershipMgr. It replaces the logic that was partially
duplicated between the ImpalaServer and the Coordinator and makes sure
that the local backend descriptor is consistent (IMPALA-8469).
The ClusterMembershipMgr maintains a view of the cluster membership and
incorporates incoming updates from the statestore. It also registers the
local backend with the statestore after startup. Clients can obtain a
consistent, immutable snapshot of the current cluster membership from
the ClusterMembershipMgr. Additionally, callbacks can be registered to
receive notifications of cluster membership changes. The ImpalaServer
and Frontend use this mechanism.
This change also unifies the naming of executor-related classes, in
particular it renames "BackendConfig" to "ExecutorGroup". In
anticipation of a subsequent change (IMPALA-8484), it adds maps to store
multiple executor groups.
This change also disables the generation of default operators from the
thrift files and instead adds explicit implementations for the ones that
we rely on. This forces us to explicitly specify comparators when
manipulating containers of thrift structs and will help prevent
accidental bugs.
Testing: This change adds a backend unit test for the new cluster
membership manager. The observable behavior of Impala does not change,
and the existing scheduler unit test and end to end tests should make
sure of that.
Change-Id: Ib3cf9a8bb060d0c6e9ec8868b7b21ce01f8740a3
---
M be/src/benchmarks/scheduler-benchmark.cc
M be/src/common/logging.h
M be/src/gutil/strings/split.cc
M be/src/gutil/strings/split.h
M be/src/rpc/thrift-util.cc
M be/src/runtime/exec-env.cc
M be/src/runtime/exec-env.h
M be/src/runtime/krpc-data-stream-mgr.cc
M be/src/runtime/query-state.h
M be/src/scheduling/CMakeLists.txt
D be/src/scheduling/backend-config-test.cc
D be/src/scheduling/backend-config.cc
D be/src/scheduling/backend-config.h
A be/src/scheduling/cluster-membership-mgr-test.cc
A be/src/scheduling/cluster-membership-mgr.cc
A be/src/scheduling/cluster-membership-mgr.h
A be/src/scheduling/cluster-membership-test-util.cc
A be/src/scheduling/cluster-membership-test-util.h
A be/src/scheduling/executor-group-test.cc
A be/src/scheduling/executor-group.cc
A be/src/scheduling/executor-group.h
M be/src/scheduling/query-schedule.cc
M be/src/scheduling/query-schedule.h
M be/src/scheduling/scheduler-test-util.cc
M be/src/scheduling/scheduler-test-util.h
M be/src/scheduling/scheduler-test.cc
M be/src/scheduling/scheduler.cc
M be/src/scheduling/scheduler.h
M be/src/service/impala-http-handler.cc
M be/src/service/impala-server.cc
M be/src/service/impala-server.h
M be/src/statestore/statestore-subscriber.cc
M be/src/statestore/statestore-subscriber.h
M be/src/statestore/statestore.cc
M be/src/testutil/in-process-servers.cc
M be/src/util/container-util.h
M be/src/util/network-util.cc
M be/src/util/network-util.h
M be/src/util/uid-util-test.cc
M common/thrift/CMakeLists.txt
M common/thrift/Frontend.thrift
M common/thrift/StatestoreService.thrift
M fe/src/main/java/org/apache/impala/service/Frontend.java
M tests/custom_cluster/test_coordinators.py
44 files changed, 1,831 insertions(+), 1,008 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/07/13207/10
--
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ib3cf9a8bb060d0c6e9ec8868b7b21ce01f8740a3
Gerrit-Change-Number: 13207
Gerrit-PatchSet: 10
Gerrit-Owner: Lars Volker <l...@cloudera.com>
Gerrit-Reviewer: Bikramjeet Vig <bikramjeet....@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Gerrit-Reviewer: Lars Volker <l...@cloudera.com>
Gerrit-Reviewer: Michael Ho <k...@cloudera.com>
Gerrit-Reviewer: Thomas Marshall <tmarsh...@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
