Card api giving 504 on some questions in MetaBase version 0.43.3

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1

We have recently encountered 504 Gateway Time-out errors when accessing certain questions. Upon investigation, we discovered that the cause of the issue is the api/card/<id> endpoint of the cards API, which is responsible for the error. This endpoint works correctly in 99% of cases, but a small number of questions are affected by the error.

Interestingly, the same queries that produce the error when accessing the affected questions work without any issues when used to create a new question.

The Troubleshoot Center shows the same results when checking the endpoint for this issue.

[8f9373b0-c900-433c-ba15-bedb6cff09fc] 2023-05-01T15:10:19+05:30 DEBUG metabase.server.middleware.log GET /api/card/1727 200 1.9 mins (9 DB calls) App DB connections: 1/15 Jetty threads: 5/50 (20 idle, 0 queued) (154 total active threads) Queries in flight: 0 (0 queued)
[8f9373b0-c900-433c-ba15-bedb6cff09fc] 2023-05-01T15:10:19+05:30 DEBUG metabase.server.middleware.log GET /api/card/1727 null 1.9 mins (9 DB calls) App DB connections: 1/15 Jetty threads: 5/50 (20 idle, 0 queued) (154 total active threads) Queries in flight: 0 (0 queued)
[8f9373b0-c900-433c-ba15-bedb6cff09fc] 2023-05-01T15:10:19+05:30 INFO metabase.server.middleware.exceptions Request canceled before finishing.

Attaching Diagnostic info as well

{
  "browser-info": {
    "language": "en-IN",
    "platform": "MacIntel",
    "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36",
    "vendor": "Google Inc."
  },
  "system-info": {
    "file.encoding": "UTF-8",
    "java.runtime.name": "OpenJDK Runtime Environment",
    "java.runtime.version": "11.0.15+10",
    "java.vendor": "Eclipse Adoptium",
    "java.vendor.url": "https://adoptium.net/",
    "java.version": "11.0.15",
    "java.vm.name": "OpenJDK 64-Bit Server VM",
    "java.vm.version": "11.0.15+10",
    "os.name": "Linux",
    "os.version": "4.14.305-227.531.amzn2.x86_64",
    "user.language": "en",
    "user.timezone": "GMT"
  },
  "metabase-info": {
    "databases": [
      "postgres",
      "snowflake"
    ],
    "hosting-env": "unknown",
    "application-database": "postgres",
    "application-database-details": {
      "database": {
        "name": "PostgreSQL",
        "version": "12.7"
      },
      "jdbc-driver": {
        "name": "PostgreSQL JDBC Driver",
        "version": "42.3.2"
      }
    },
    "run-mode": "prod",
    "version": {
      "date": "2022-06-13",
      "tag": "v0.43.3",
      "branch": "release-x.43.x",
      "hash": "c9c7ef0"
    },
    "settings": {
      "report-timezone": null
    }
  }
}
2

Please upgrade to the latest version and see if this keeps happening. A few things that come to my mind:

  1. the api call can’t take almost 2 minutes, there’s something weird there
  2. post if possible the definition of the question and try to recreate it and check the diff of the working and non working ones
3

Blockquote
"post if possible the definition of the question and try to recreate it and check the diff of the working and non working ones"

Do we mean the raw-sql we are using to generate the question here?
and yes even we find it weird that it is timing out after 2 min for some cases, others hardly take milliseconds

4

my guess is the following: when you hit /api/card/1727 you get a JSON. Recreate that card and now compare the JSON from the first with the JSON from the second

5

problem is it doesn't return any data, it just times out with 504

6

then I would check if the database is right or the application is losing connection to the DB, since there should be a response