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milvus/internal/datacoord
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wei liu 47949fd883
enhance: Implement rewatch mechanism for etcd failure scenarios (#43829) (#43920) 
issue: #43828
pr: #43829 #43909
Implement robust rewatch mechanism to handle etcd connection failures
and node reconnection scenarios in DataCoord and QueryCoord, along with
heartbeat lag monitoring capabilities.

Changes include:
- Implement rewatchDataNodes/rewatchQueryNodes callbacks for etcd
reconnection scenarios
- Add idempotent rewatchNodes method to handle etcd session recovery
gracefully
- Add QueryCoordLastHeartbeatTimeStamp metric for monitoring node
heartbeat lag
- Clean up heartbeat metrics when nodes go down to prevent metric leaks

---------

---------

Signed-off-by: Wei Liu <wei.liu@zilliz.com>
Co-authored-by: Zhen Ye <chyezh@outlook.com>
2025-10-15 14:12:01 +08:00
..
allocator
fix: [2.5] mockery too unavailable after upgrade golang version (#41522)
2025-04-25 14:40:40 +08:00
broker
enhance: [2.5] Add granular flush targets support for FlushAll operation (#44431)
2025-09-28 10:37:06 +08:00
session
enhance: Implement rewatch mechanism for etcd failure scenarios (#43829) (#43920)
2025-10-15 14:12:01 +08:00
.mockery.yaml
enhance: [2.5] Support detailed manual compaction criterion (#40892) (#40924)
2025-03-27 10:36:22 +08:00
analyze_meta_test.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
analyze_meta.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
build_index_policy.go
Format the code (#27275)
2023-09-21 09:45:27 +08:00
channel_manager_factory.go
fix: drop collection failed if enable streaming service (#37444)
2024-11-07 10:26:26 +08:00
channel_manager_test.go
fix: ChannelManager double assignment (#41877)
2025-05-16 14:58:23 +08:00
channel_manager.go
fix: ChannelManager double assignment (#41877)
2025-05-16 14:58:23 +08:00
channel_store_test.go
fix: ChannelManager double assignment (#41877)
2025-05-16 14:58:23 +08:00
channel_store.go
fix: ChannelManager double assignment (#41877)
2025-05-16 14:58:23 +08:00
channel.go
enhance: [2.5] support run analyzer by loaded collection field (#42119)
2025-05-29 10:26:30 +08:00
cluster_test.go
enhance: Implement rewatch mechanism for etcd failure scenarios (#43829) (#43920)
2025-10-15 14:12:01 +08:00
cluster.go
enhance: Implement rewatch mechanism for etcd failure scenarios (#43829) (#43920)
2025-10-15 14:12:01 +08:00
compaction_l0_view_test.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
compaction_l0_view.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
compaction_policy_clustering_test.go
fix: [cp25]Use diskSegmentMaxSize for coll with sparse and dense vectors (#43195)
2025-07-18 11:16:52 +08:00
compaction_policy_clustering.go
fix: [2.5] Only mark segment compacting for sort stats task (#42517)
2025-06-04 21:40:32 +08:00
compaction_policy_l0_test.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
compaction_policy_l0.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
compaction_policy_single_test.go
enhance: [2.5] Optimize datacoord meta mutex (#40753)
2025-03-25 13:50:21 +08:00
compaction_policy_single.go
fix: [2.5]datacoord stop get stuck After upgrading from 2.5 to 2.6 (#42669)
2025-06-16 19:56:38 +08:00
compaction_queue_test.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
compaction_queue.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
compaction_task_clustering_test.go
enhance: [2.5] Remove timeout for compaction task (#44278)
2025-09-15 21:24:01 +08:00
compaction_task_clustering.go
enhance: [2.5] Remove timeout for compaction task (#44278)
2025-09-15 21:24:01 +08:00
compaction_task_l0_test.go
fix: [2.5] Fix delete data loss due to duplicate binlogID (#40976)
2025-03-28 14:34:21 +08:00
compaction_task_l0.go
enhance: [2.5] Remove timeout for compaction task (#44278)
2025-09-15 21:24:01 +08:00
compaction_task_meta_test.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
compaction_task_meta.go
fix: [2.5] Fix invalid pre-allocated segment IDs (#44351)
2025-09-15 20:32:00 +08:00
compaction_task_mix_test.go
fix: [2.5] Fix delete data loss due to duplicate binlogID (#40976)
2025-03-28 14:34:21 +08:00
compaction_task_mix.go
enhance: [2.5] Remove timeout for compaction task (#44278)
2025-09-15 21:24:01 +08:00
compaction_task.go
enhance: [2.5] Remove timeout for compaction task (#44278)
2025-09-15 21:24:01 +08:00
compaction_test.go
enhance: [2.5] Remove timeout for compaction task (#44278)
2025-09-15 21:24:01 +08:00
compaction_trigger_test.go
enhance: [2.5] Remove timeout for compaction task (#44278)
2025-09-15 21:24:01 +08:00
compaction_trigger_v2_test.go
fix: [cp25]Use diskSegmentMaxSize for coll with sparse and dense vectors (#43195)
2025-07-18 11:16:52 +08:00
compaction_trigger_v2.go
enhance: [2.5] Remove timeout for compaction task (#44278)
2025-09-15 21:24:01 +08:00
compaction_trigger.go
enhance: [2.5] Remove timeout for compaction task (#44278)
2025-09-15 21:24:01 +08:00
compaction_util.go
fix: [2.5] Fix delete data loss due to duplicate binlogID (#40976)
2025-03-28 14:34:21 +08:00
compaction_view.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
compaction.go
enhance: compaction task metric bug (#44280)
2025-09-17 10:06:01 +08:00
const.go
enhance: pass partition key scalar info if enabled when build vector index (#29931)
2024-01-24 00:04:55 +08:00
errors_test.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
errors.go
Refine DataCoord status (#27262)
2023-09-26 17:15:27 +08:00
garbage_collector_test.go
fix: [2.5] Use locking to ensure the atomicity of dropping segment indexes (#42076)
2025-05-26 15:40:28 +08:00
garbage_collector.go
fix: [2.5]datacoord stop get stuck After upgrading from 2.5 to 2.6 (#42669)
2025-06-16 19:56:38 +08:00
go_channel_singleton.go
fix: Fix improper use of offset in HybridSearch (#36244)
2024-09-13 22:05:15 +08:00
handler_test.go
feat: cherry pick json path index (#40313)
2025-03-10 22:14:05 +08:00
handler.go
fix: [2.5]datacoord stop get stuck After upgrading from 2.5 to 2.6 (#42669)
2025-06-16 19:56:38 +08:00
import_checker_test.go
enhance: [2.5] Enhance import integration tests and logs (#42696)
2025-06-16 20:06:38 +08:00
import_checker.go
fix: [cp25]Use diskSegmentMaxSize for coll with sparse and dense vectors (#43195)
2025-07-18 11:16:52 +08:00
import_job.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
import_meta_test.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
import_meta.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
import_scheduler_test.go
enhance: [2.5] Enhance import context (#42051)
2025-05-24 18:40:26 +08:00
import_scheduler.go
enhance: [2.5] Enhance import context (#42051)
2025-05-24 18:40:26 +08:00
import_task.go
fix: [2.5] Fix import slot assignment (#41982)
2025-05-23 01:36:30 +08:00
import_util_test.go
fix: [cp25]Use diskSegmentMaxSize for coll with sparse and dense vectors (#43195)
2025-07-18 11:16:52 +08:00
import_util.go
feat: encode cluster id in auto id (#44471) (#44500)
2025-09-22 20:30:10 +08:00
index_engine_version_manager_test.go
enhance: Implement rewatch mechanism for etcd failure scenarios (#43829) (#43920)
2025-10-15 14:12:01 +08:00
index_engine_version_manager.go
enhance: Implement rewatch mechanism for etcd failure scenarios (#43829) (#43920)
2025-10-15 14:12:01 +08:00
index_meta_test.go
fix: [2.5] Use locking to ensure the atomicity of dropping segment indexes (#42076)
2025-05-26 15:40:28 +08:00
index_meta.go
enhance: [2.5] Add param item forcing all indices ready for segment (#44329)
2025-09-12 19:29:58 +08:00
index_service_test.go
enhance: [2.5] Output index version information in the DescribeIndex interface (#41841)
2025-05-15 14:34:23 +08:00
index_service.go
fix: [2.5] Don't create index for unsorted importing segment when enable stats (#41865)
2025-05-16 10:18:35 +08:00
job_manager_test.go
fix: [2.5] Ensure task execution order by using a priority queue (#43272)
2025-07-23 10:16:54 +08:00
job_manager.go
fix: [2.5] Fix index blocked by failed sort stats (#43061)
2025-07-02 22:32:45 +08:00
knapsack_test.go
enhance: try compact small segments first if they may compose a full segment (#37709)
2024-12-02 16:12:38 +08:00
knapsack.go
fix: [2.5] Pass Knapsnak ptr to avoid compact multiple times (#40401)
2025-03-06 14:16:03 +08:00
meta_test.go
feat: refine drop parition through the new interface notifydroppartition in datacoord (#41543)
2025-04-27 17:42:40 +08:00
meta_util.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
meta.go
fix: [2.5] avoid concurrent Reset/Add operations on DataCoord metrics (#44789) (#44817)
2025-10-14 20:06:00 +08:00
metrics_info_test.go
enhance: [2.5] Refine task meta with key lock (#40353)
2025-03-13 19:18:08 +08:00
metrics_info.go
feat: [2.5]Ignore reporting index metrics for non-existent indexes (#41296)
2025-04-17 16:28:34 +08:00
mock_channel_manager.go
fix: [2.5] mockery too unavailable after upgrade golang version (#41522)
2025-04-25 14:40:40 +08:00
mock_channel_store.go
fix: ChannelManager double assignment (#41877)
2025-05-16 14:58:23 +08:00
mock_cluster.go
fix: [2.5] mockery too unavailable after upgrade golang version (#41522)
2025-04-25 14:40:40 +08:00
mock_compaction_meta.go
fix: [2.5] mockery too unavailable after upgrade golang version (#41522)
2025-04-25 14:40:40 +08:00
mock_compaction_plan_context.go
fix: [2.5] mockery too unavailable after upgrade golang version (#41522)
2025-04-25 14:40:40 +08:00
mock_handler.go
fix: [2.5] mockery too unavailable after upgrade golang version (#41522)
2025-04-25 14:40:40 +08:00
mock_index_engine_version_manager.go
fix: [2.5] mockery too unavailable after upgrade golang version (#41522)
2025-04-25 14:40:40 +08:00
mock_segment_manager.go
feat: refine drop parition through the new interface notifydroppartition in datacoord (#41543)
2025-04-27 17:42:40 +08:00
mock_stats_job_manager.go
fix: [2.5] mockery too unavailable after upgrade golang version (#41522)
2025-04-25 14:40:40 +08:00
mock_sub_cluster.go
fix: [2.5] mockery too unavailable after upgrade golang version (#41522)
2025-04-25 14:40:40 +08:00
mock_test.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
mock_trigger_manager.go
fix: [2.5] mockery too unavailable after upgrade golang version (#41522)
2025-04-25 14:40:40 +08:00
mock_trigger.go
fix: [2.5] mockery too unavailable after upgrade golang version (#41522)
2025-04-25 14:40:40 +08:00
OWNERS
[skip ci]Update OWNERS files (#11898)
2021-11-16 15:41:11 +08:00
partition_stats_meta_test.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
partition_stats_meta.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
policy_test.go
fix: [2.5] Fix channel not balance on datanodes (#40854)
2025-03-25 10:06:24 +08:00
policy.go
fix: [2.5] Fix channel not balance on datanodes (#40854)
2025-03-25 10:06:24 +08:00
README.md
[skip ci]Change etcd to lowercase (#9983)
2021-10-15 18:58:37 +08:00
segment_allocation_policy_test.go
fix: [2.5] Ignore growing segment without start pos for seal policy (#41131)
2025-04-07 23:42:27 +08:00
segment_allocation_policy.go
fix: [2.5] Ignore growing segment without start pos for seal policy (#41131)
2025-04-07 23:42:27 +08:00
segment_info_test.go
fix: [2.5] Fix GetCompactionTo return empty results when segment was GCed (#44271)
2025-09-15 10:53:59 +08:00
segment_info.go
fix: [2.5] Fix GetCompactionTo return empty results when segment was GCed (#44271)
2025-09-15 10:53:59 +08:00
segment_manager_test.go
feat: refine drop parition through the new interface notifydroppartition in datacoord (#41543)
2025-04-27 17:42:40 +08:00
segment_manager.go
feat: refine drop parition through the new interface notifydroppartition in datacoord (#41543)
2025-04-27 17:42:40 +08:00
segment_operator_test.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
segment_operator.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
server_test.go
enhance: Implement rewatch mechanism for etcd failure scenarios (#43829) (#43920)
2025-10-15 14:12:01 +08:00
server.go
enhance: Implement rewatch mechanism for etcd failure scenarios (#43829) (#43920)
2025-10-15 14:12:01 +08:00
services_test.go
enhance: [2.5] Add granular flush targets support for FlushAll operation (#44431)
2025-09-28 10:37:06 +08:00
services.go
enhance: [2.5] Add granular flush targets support for FlushAll operation (#44431)
2025-09-28 10:37:06 +08:00
stats_task_meta_test.go
fix: [2.5] Update logging context and upgrade dependencies (#41319)
2025-04-24 23:50:40 +08:00
stats_task_meta.go
fix: [2.5] Update logging context and upgrade dependencies (#41319)
2025-04-24 23:50:40 +08:00
sync_segments_scheduler_test.go
enhance: [2.5] Optimize datacoord meta mutex (#40753)
2025-03-25 13:50:21 +08:00
sync_segments_scheduler.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
task_analyze.go
enhance: [2.5] Support slot for index task and stats task (#40288)
2025-03-19 16:50:11 +08:00
task_index.go
fix: [2.5] Use locking to ensure the atomicity of dropping segment indexes (#42076)
2025-05-26 15:40:28 +08:00
task_queue.go
fix: skip loading non-existent L0 segments to prevent load blocking (#43576)
2025-07-31 14:33:38 +08:00
task_scheduler_test.go
fix: [2.5] Ensure task execution order by using a priority queue (#43272)
2025-07-23 10:16:54 +08:00
task_scheduler.go
fix: [2.5] Ensure task execution order by using a priority queue (#43272)
2025-07-23 10:16:54 +08:00
task_stats_test.go
fix: [2.5] Update logging context and upgrade dependencies (#41319)
2025-04-24 23:50:40 +08:00
task_stats.go
fix: [2.5] Fix index blocked by failed sort stats (#43061)
2025-07-02 22:32:45 +08:00
types.go
enhance: [2.5] Support slot for index task and stats task (#40288)
2025-03-19 16:50:11 +08:00
util_test.go
enhance: [2.5] Use v2 package name for pkg module (#40117)
2025-02-23 00:46:01 +08:00
util.go
enhance: [2.5] Add param item forcing all indices ready for segment (#44329)
2025-09-12 19:29:58 +08:00

README.md

Data Coordinator

Data cooridnator(datacoord for short) is the component to organize DataNodes and segments allocations.

Dependency

  • KV store: a kv store has all the meta info datacoord needs to operate. (etcd)
  • Message stream: a message stream to communicate statistics information with data nodes. (Pulsar)
  • Root Coordinator: timestamp, id and meta source.
  • Data Node(s): could be an instance or a cluster, actual worker group handles data modification operations.