[Feature Request] Provide embedded log events support associated with span/trace #224

Use Case

Log is a recording of an event, generally including the timestamp which conveys when did the event occur, what happened, where did it happen. As per otel specs, it can be associated with span. Such events will be useful in RCA and Performance analysis.

Proposal

• indicator for log records in api-trace & full trace view
• list all log records associated with a span
• Slice/Dice capabilities on log records (Helpful in identifying which associated operation has failed/partially failed)

Subtask

• Ingestion
• Data Model
• Config-bootstrapper
• Query-service
• Gateway-service
• Graphql-service [log api]
• Graphql-service [log span joiner]
• Follow up Ingestion - adding summary column
• Remove LOG_EVENT.attribute from dictionary indexing and update max column size
• Add custom metrics for reporting attributes size
• Handle case when spanId is not requested in span-log join request
• Add e2e test for log in Hypertrace
• UI

Phase2

• log search