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Can you confirm if the signoz collector was running when this happened?

yes, it was

Collector runs the migrations. If migration fails it restarts. If the corrector is running then it shouldn’t have been an issue. Are you still facing issue? What table exist in

signoz_traces

db?

these are the pods running

chi-signoz-clickhouse-cluster-0-0-0                              1/1     Running            0                 15h
signoz-alertmanager-0                                            1/1     Running            0                 7h15m
signoz-clickhouse-operator-56fc8d9b5f-cbw96                      2/2     Running            0                 15h
signoz-frontend-6b7977b5fb-hr22s                                 1/1     Running            0                 7h15m
signoz-k8s-infra-otel-agent-bndkv                                1/1     Running            0                 14h
signoz-k8s-infra-otel-agent-txt8c                                1/1     Running            0                 18h
signoz-k8s-infra-otel-agent-wz99w                                1/1     Running            0                 7h15m
signoz-k8s-infra-otel-deployment-7bb879d497-rb7sk                1/1     Running            0                 14h
signoz-otel-collector-5bfd4dd769-bj7p8                           1/1     Running            3 (7h12m ago)     7h15m
signoz-otel-collector-metrics-7846489b9-bn4zc                    1/1     Running            0                 11m
signoz-query-service-0                                           1/1     Running            0                 7h15m
signoz-zookeeper-0                                               1/1     Running            0                 7h15m

these are the tables in clickhouse:

SHOW TABLES FROM signoz_traces

Query id: 82636ec2-bd1c-4326-85c1-712201e7c36c

┌─name────────────────────────────────────────┐
│ dependency_graph_minutes                    │
│ dependency_graph_minutes_messaging_calls_mv │
│ dependency_graph_minutes_service_calls_mv   │
│ distributed_dependency_graph_minutes        │
│ distributed_durationSort                    │
│ distributed_signoz_error_index_v2           │
│ distributed_signoz_index_v2                 │
│ distributed_signoz_spans                    │
│ distributed_top_level_operations            │
│ distributed_usage                           │
│ distributed_usage_explorer                  │
│ durationSort                                │
│ durationSortMV                              │
│ root_operations                             │
│ schema_migrations                           │
│ signoz_error_index                          │
│ signoz_error_index_v2                       │
│ signoz_index                                │
│ signoz_index_v2                             │
│ signoz_spans                                │
│ sub_root_operations                         │
│ top_level_operations                        │
│ usage                                       │
│ usage_explorer                              │
│ usage_explorer_mv                           │
└─────────────────────────────────────────────┘

That’s unusual. Can you stop and start the signoz-otel-collector again?

just did, see the following logs

023-08-16T07:28:26.390Z        info    service/telemetry.go:104        Setting up own telemetry...
2023-08-16T07:28:26.391Z        info    service/telemetry.go:127        Serving Prometheus metrics      {"address": "0.0.0.0:8888", "level": "Basic"}
2023-08-16T07:28:26.391Z        info    exporter@v0.79.0/exporter.go:275        Stability level of component is undefined       {"kind": "exporter", "data_type": "traces", "name": "clickhousetraces"}
2023-08-16T07:28:26.600Z        info    clickhousetracesexporter/clickhouse_factory.go:141      View does not exist, skipping patch     {"kind": "exporter", "data_type": "traces", "name": "clickhousetraces", "table": "dependency_graph_minutes_db_calls_mv"}
2023-08-16T07:28:26.600Z        info    clickhousetracesexporter/clickhouse_factory.go:115      Running migrations from path:   {"kind": "exporter", "data_type": "traces", "name": "clickhousetraces", "test": "/migrations"}
2023-08-16T07:28:26.611Z        info    clickhousetracesexporter/clickhouse_factory.go:127      Clickhouse Migrate finished     {"kind": "exporter", "data_type": "traces", "name": "clickhousetraces", "error": "Dirty database version 19. Fix and force version."}
2023-08-16T07:28:27.507Z        info    exporter@v0.79.0/exporter.go:275        Stability level of component is undefined       {"kind": "exporter", "data_type": "metrics", "name": "clickhousemetricswrite"}
time="2023-08-16T07:28:27Z" level=info msg="Executing:\nCREATE DATABASE IF NOT EXISTS signoz_metrics ON CLUSTER cluster\n" component=clickhouse
time="2023-08-16T07:28:27Z" level=info msg="Executing:\nCREATE TABLE IF NOT EXISTS signoz_metrics.samples_v2 ON CLUSTER cluster (\n\t\t\tmetric_name LowCardinality(String),\n\t\t\tfingerprint UInt64 Codec(DoubleDelta, LZ4),\n\t\t\ttimestamp_ms Int64 Codec(DoubleDelta, LZ4),\n\t\t\tvalue Float64 Codec(Gorilla, LZ4)\n\t\t)\n\t\tENGINE = MergeTree\n\t\t\tPARTITION BY toDate(timestamp_ms / 1000)\n\t\t\tORDER BY (metric_name, fingerprint, timestamp_ms)\n\t\t\tTTL toDateTime(timestamp_ms/1000) + INTERVAL 2592000 SECOND DELETE;\n" component=clickhouse
time="2023-08-16T07:28:27Z" level=info msg="Executing:\nCREATE TABLE IF NOT EXISTS signoz_metrics.distributed_samples_v2 ON CLUSTER cluster AS signoz_metrics.samples_v2 ENGINE = Distributed(\"cluster\", \"signoz_metrics\", samples_v2, cityHash64(metric_name, fingerprint));\n" component=clickhouse
time="2023-08-16T07:28:28Z" level=info msg="Executing:\nALTER TABLE signoz_metrics.samples_v2 ON CLUSTER cluster MODIFY SETTING ttl_only_drop_parts = 1;\n" component=clickhouse
time="2023-08-16T07:28:28Z" level=info msg="Executing:\nSET allow_experimental_object_type = 1\n" component=clickhouse
time="2023-08-16T07:28:28Z" level=info msg="Executing:\nCREATE TABLE IF NOT EXISTS signoz_metrics.time_series_v2 ON CLUSTER cluster(\n\t\t\tmetric_name LowCardinality(String),\n\t\t\tfingerprint UInt64 Codec(DoubleDelta, LZ4),\n\t\t\ttimestamp_ms Int64 Codec(DoubleDelta, LZ4),\n\t\t\tlabels String Codec(ZSTD(5))\n\t\t)\n\t\tENGINE = ReplacingMergeTree\n\t\t\tPARTITION BY toDate(timestamp_ms / 1000)\n\t\t\tORDER BY (metric_name, fingerprint)\n\t\t\tTTL toDateTime(timestamp_ms/1000) + INTERVAL 2592000 SECOND DELETE;\n" component=clickhouse
time="2023-08-16T07:28:28Z" level=info msg="Executing:\nCREATE TABLE IF NOT EXISTS signoz_metrics.distributed_time_series_v2 ON CLUSTER cluster AS signoz_metrics.time_series_v2 ENGINE = Distributed(\"cluster\", signoz_metrics, time_series_v2, cityHash64(metric_name, fingerprint));\n" component=clickhouse
time="2023-08-16T07:28:28Z" level=info msg="Executing:\nALTER TABLE signoz_metrics.time_series_v2 ON CLUSTER cluster DROP COLUMN IF EXISTS labels_object\n" component=clickhouse
time="2023-08-16T07:28:28Z" level=info msg="Executing:\nALTER TABLE signoz_metrics.distributed_time_series_v2 ON CLUSTER cluster DROP COLUMN IF EXISTS labels_object\n" component=clickhouse
time="2023-08-16T07:28:28Z" level=info msg="Executing:\nALTER TABLE signoz_metrics.time_series_v2 ON CLUSTER cluster MODIFY SETTING ttl_only_drop_parts = 1;\n" component=clickhouse
time="2023-08-16T07:28:28Z" level=info msg="Executing:\nALTER TABLE signoz_metrics.time_series_v2 ON CLUSTER cluster ADD COLUMN IF NOT EXISTS temporality LowCardinality(String) DEFAULT 'Unspecified' CODEC(ZSTD(5))\n" component=clickhouse
time="2023-08-16T07:28:29Z" level=info msg="Executing:\nALTER TABLE signoz_metrics.distributed_time_series_v2 ON CLUSTER cluster ADD COLUMN IF NOT EXISTS temporality LowCardinality(String) DEFAULT 'Unspecified' CODEC(ZSTD(5))\n" component=clickhouse
time="2023-08-16T07:28:29Z" level=info msg="Executing:\nALTER TABLE signoz_metrics.time_series_v2 ON CLUSTER cluster ADD INDEX IF NOT EXISTS temporality_index temporality TYPE SET(3) GRANULARITY 1\n" component=clickhouse
time="2023-08-16T07:28:29Z" level=info msg="Executing:\nCREATE TABLE IF NOT EXISTS signoz_metrics.time_series_v3 ON CLUSTER cluster (\n\t\t\tenv LowCardinality(String) DEFAULT 'default',\n\t\t\ttemporality LowCardinality(String) DEFAULT 'Unspecified',\n\t\t\tmetric_name LowCardinality(String),\n\t\t\tfingerprint UInt64 CODEC(Delta, ZSTD),\n\t\t\ttimestamp_ms Int64 CODEC(Delta, ZSTD),\n\t\t\tlabels String CODEC(ZSTD(5))\n\t\t)\n\t\tENGINE = ReplacingMergeTree\n\t\t\tPARTITION BY toDate(timestamp_ms / 1000)\n\t\t\tORDER BY (env, temporality, metric_name, fingerprint);\n" component=clickhouse
time="2023-08-16T07:28:29Z" level=info msg="Executing:\nCREATE TABLE IF NOT EXISTS signoz_metrics.distributed_time_series_v3 ON CLUSTER cluster AS signoz_metrics.time_series_v3 ENGINE = Distributed(\"cluster\", signoz_metrics, time_series_v3, cityHash64(env, temporality, metric_name, fingerprint));\n" component=clickhouse
time="2023-08-16T07:28:29Z" level=info msg="Shard count changed from 0 to 1. Resetting time series map." component=clickhouse
2023-08-16T07:28:30.485Z        info    clickhouselogsexporter/exporter.go:455  Running migrations from path:   {"kind": "exporter", "data_type": "logs", "name": "clickhouselogsexporter", "test": "/logsmigrations"}
2023-08-16T07:28:30.547Z        info    clickhouselogsexporter/exporter.go:469  Clickhouse Migrate finished     {"kind": "exporter", "data_type": "logs", "name": "clickhouselogsexporter"}
2023-08-16T07:28:30.867Z        info    processor/processor.go:289      Development component. May change in the future.        {"kind": "processor", "name": "logstransform/internal", "pipeline": "logs"}
2023-08-16T07:28:30.868Z        info    kube/client.go:97       k8s filtering   {"kind": "processor", "name": "k8sattributes", "pipeline": "metrics/internal", "labelSelector": "", "fieldSelector": "spec.nodeName=ip-10-2-3-81.eu-west-1.compute.internal"}
2023-08-16T07:28:30.868Z        warn    filesystemscraper/factory.go:60 No `root_path` config set when running in docker environment, will report container filesystem stats. See <https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/receiver/hostmetricsreceiver#collecting-host-metrics-from-inside-a-container-linux-only>       {"kind": "receiver", "name": "hostmetrics", "data_type": "metrics"}
2023-08-16T07:28:30.868Z        info    signozspanmetricsprocessor/processor.go:141     Building signozspanmetricsprocessor     {"kind": "processor", "name": "signozspanmetrics/prometheus", "pipeline": "traces"}
2023-08-16T07:28:30.887Z        info    service/service.go:131  Starting signoz-otel-collector...       {"Version": "latest", "NumCPU": 8}
2023-08-16T07:28:30.887Z        info    extensions/extensions.go:30     Starting extensions...

The migration is successful, and tables should exist. You mentioned you are using

0.25.5

but the collector version is no

0.79.0

in that SigNoz version.

the collector image used:

Image:         <http://docker.io/signoz/signoz-otel-collector:0.79.5|docker.io/signoz/signoz-otel-collector:0.79.5>

helm deployment:

signoz        my-namespace            14              2023-08-16 06:46:27.692361301 +0000 UTC deployed        signoz-0.21.5                           0.25.5

Can you drop the

schema_migrations

and try again?

it worked! 🥳

SELECT count(*)
FROM signoz_traces.distributed_span_attributes_keys

Query id: 73237327-ff72-46b5-bc82-a2ca8912b399

┌─count()─┐
│     204 │
└─────────┘

1 row in set. Elapsed: 0.001 sec.

not sure

Alright Thanks for your help!