Online Troubleshooting and Retrospective for Data Cleaning and Quality Inspection: Database and Operations

Data sources for this category include raw business datasets, ETL process logs, annotation platform output results, and sampling quality inspection

What data looks like for this category

Data sources for this category include raw business datasets, ETL process logs, annotation platform output results, and sampling quality inspection results. Data updates follow a daily batch schedule or are triggered by individual batch tasks. Daily deliverables include cleaning rule configuration files, quality inspection sampling statistics tables, abnormal data lists, and final delivery reports. Data fields cover raw data identifiers, cleaning tags, exception types, quality inspection scores, and sampling batch numbers. There are no unified fixed units; values adjust based on specific business scenarios.

Bulk updates of raw datasets and ETL logs require database connection pools to adapt to high-concurrency short connection scenarios. Frequent writes of abnormal data lists and delivery reports require configuring appropriate write buffers to avoid blocking. The daily or per-batch update feature requires operations workflows to support scheduled task-triggered data synchronization and verification. Field differences across business scenarios require database table structures to reserve extended fields, avoiding frequent table alterations. Additionally, associated storage of cleaning rules and quality inspection results requires guaranteeing data read-write consistency to prevent dirty data.

Configuration guidelines

This guide applies to FastGPT v4.17.0.

Configuration ItemRecommended SettingRationale
MONGODB_URImongodb://user:pass@host:27017/fastgpt_data?replicaSet=rs0Adapts to bulk data storage and query needs; replica set configuration ensures read-write consistency, matching storage scenarios for raw datasets and abnormal lists
PG_URLpostgresql://user:pass@host:5432/metadata_db?sslmode=requireUsed to store structured metadata such as cleaning rules and quality inspection reports; SSL encryption ensures data security, adapting to structured metadata storage needs
DB_MAX_LINK200–300 connectionsMatches concurrent connection requirements for daily or per-batch bulk data processing, avoiding task interruptions caused by exhausted connections
REDIS_URLredis://:pass@host:6379/0Used to cache temporary cleaning task status and sampling results, reducing database read-write pressure, adapting to high-speed read-write scenarios for temporary data
Bulk write threshold500 items per batchAdapts to bulk write scenarios for abnormal data lists, reducing database IO overhead and improving write efficiency

Three common configuration mistakes

  • Symptom: Fields appear empty or import fails when uploading Excel to the knowledge base, with status code 400 returned in the interface. Cause: The replica set parameter for MONGODB_URI is not configured, and only a single-node connection configuration is used, leading to data consistency check failure during bulk writes.
  • Symptom: MongoDB reports missing replica set configuration during local deployment. Cause: The replicaSet parameter for MONGODB_URI is not set as required, and only single-node connection information is configured, which cannot support consistency requirements for bulk data processing.
  • Symptom: Duplicate data entries appear after importing ETL logs. Cause: A reasonable value for DB_MAX_LINK is not configured, and excessive concurrent connections lead to duplicate insert operations, breaking data uniqueness.

How to verify correct configuration

  • Execute a database connection test script to verify connectivity for MONGODB_URI and PG_URL, and confirm that the actual connection count does not exceed the configured DB_MAX_LINK value.
  • Upload a single batch of test datasets, trigger the cleaning and quality inspection process, and check whether temporary cached data can be written normally to the cache service corresponding to REDIS_URL.
  • View the generation logs for the abnormal data list, and confirm that the execution status of bulk write operations matches the configured threshold requirements.
  • Check the associated storage of cleaning rules and quality inspection results, and confirm that data read-write consistency meets business requirements.

The values provided are common starting points and should be measured against the reader's own samples.

Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-10-19.