Wenzhe Zhou has uploaded a new patch set (#4). ( http://gerrit.cloudera.org:8080/20372 )
Change subject: IMPALA-12156: Support High Availability for Statestore ...................................................................... IMPALA-12156: Support High Availability for Statestore To support statestore HA, we allow two statestored instances in an Active-Passive HA pair to be added to an Impala cluster. We add the preemptive behavior for statestored. When HA is enabled, the preemptive behavior allows the statestored with the higher priority to become active and the paired statestored becomes standby. The active statestored acts as the owner of Impala cluster and provides statestore service for the cluster members. To enable catalog HA for a cluster, two statestoreds in the HA pair and all subscribers must be started with starting flag "enable_statestored_ha". - Define new service for Statestore HA. - Negotiate role for HA with peer statestore instance on startup. - Create HA monitor thread: active statestored send heartbeat to standby statestored. standby statestored monitor peer's connection states - Standby statestored send heartbeat to subscribers with request for connection state between active statestore and subscribers. Standby statestored save the connection state as failure detecer. - When standby statestored loss connection with active statestore, check the connection states for active statestore, and take over active role if majority of subscribers lose connections with active statestore. - New active statestored send RPC notification to all subscribers for new active statestored and active catalogd elected by new active staetstored. - New active statestored start to send heartbeat to its peer when it receive handshake from its peer. - Subscriber register to two statestoreds. - Subscriber report connection state for in-active statestore. - Subscriber switch to new active statstore, refuse topic update from standby statestored. Testings: - Added end-to-end unit tests. - TODO: pass core tests Change-Id: Ibd2c814bbad5c04c1d50c2edaa5b910c82a6fd87 --- M be/generated-sources/gen-cpp/CMakeLists.txt M be/src/catalog/catalog-server.cc M be/src/common/global-flags.cc M be/src/runtime/exec-env.cc M be/src/runtime/exec-env.h M be/src/scheduling/admissiond-env.cc M be/src/statestore/statestore-service-client-wrapper.h M be/src/statestore/statestore-subscriber-catalog.cc M be/src/statestore/statestore-subscriber-catalog.h M be/src/statestore/statestore-subscriber-client-wrapper.h M be/src/statestore/statestore-subscriber.cc M be/src/statestore/statestore-subscriber.h M be/src/statestore/statestore-test.cc M be/src/statestore/statestore.cc M be/src/statestore/statestore.h M be/src/statestore/statestored-main.cc M bin/start-impala-cluster.py M common/thrift/StatestoreService.thrift M common/thrift/metrics.json M tests/common/impala_cluster.py M tests/common/impala_service.py A tests/custom_cluster/test_statestored_ha.py 22 files changed, 2,088 insertions(+), 106 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/72/20372/4 -- To view, visit http://gerrit.cloudera.org:8080/20372 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: newpatchset Gerrit-Change-Id: Ibd2c814bbad5c04c1d50c2edaa5b910c82a6fd87 Gerrit-Change-Number: 20372 Gerrit-PatchSet: 4 Gerrit-Owner: Wenzhe Zhou <wz...@cloudera.com> Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com> Gerrit-Reviewer: Wenzhe Zhou <wz...@cloudera.com>
