The string is represented by kafkacat with:

\ud83c\udf78

Which is UTF-16 for 🍸

Then after parsing it with fromjson and serializing it with tosjon, what results is:

\355\240\274\355\275\270

bsoncxx rejects this as invalid, which is true.

===========

 

The follow string can cause the error. Internal mongod BSON classes work fine.

$6 = 0x7f5edaf49c20 "{\"$set\":{\"$schema\":\"/mediawiki/recentchange/1.0.0\",\"meta\":{\"uri\":\"https://it.wikipedia.org/wiki/Discussioni_utente:Valepert\",\"request_id\":\"c6d88f7f-9a3c-4b7e-a7cd-421b90ed4a46\",\"id\":\"48472b65-6635-4b65-990c-fcc5e66310e6\",\"dt\":\"2023-09-21T03:05:04Z\",\"domain\":\"it.wikipedia.org\",\"stream\":\"mediawiki.recentchange\",\"topic\":\"codfw.mediawiki.recentchange\",\"partition\":

{\"$numberInt\":\"0\"}

,\"offset\":{\"$numberInt\":\"628263911\"}},\"id\":{\"$numberInt\":\"326192030\"},\"type\":\"edit\",\"namespace\":{\"$numberInt\":\"3\"},\"title\":\"Discussioni utente:Valepert\",\"title_url\":\"https://it.wikipedia.org/wiki/Discussioni_utente:Valepert\",\"comment\":\"\355\240\274\355\275\270\",\"timestamp\":{\"$numberInt\":\"1695265504\"},\"user\":\"Valepert\",\"bot\":false,\"notify_url\":\"https://it.wikipedia.org/w/index.php?diff=135583987&oldid=135530929&rcid=326192030\",\"minor\":false,\"patrolled\":true,\"length\":{\"old\":

{\"$numberInt\":\"48232\"}

,\"new\":{\"$numberInt\":\"48253\"}},\"revision\":{\"old\":

{\"$numberInt\":\"135530929\"}

,\"new\":{\"$numberInt\":\"135583987\"}},\"server_url\":\"https://it.wikipedia.org\",\"server_name\":\"it.wikipedia.org\",\"server_script_path\":\"/w\",\"wiki\":\"itwiki\",\"parsedcomment\":\"\355\240\274\355\275\270\",\"_ts\":{\"$date\":{\"$numberLong\":\"1695272056821\"}},\"_stream_meta\":{\"sourceType\":\"kafka\",\"sourcePartition\":

{\"$numberInt\":\"0\"}

,\"sourceOffset\":{\"$numberLong\":\"10882591\"},\"timestamp\":{\"$date\":

{\"$numberLong\":\"1695272056821\"}

}},\"_id\":{\"$oid\":\"650c82f98c47efea135f73a3\"}}}"

 

 

 

 

mstreams: Invalid bytes in UTF8 string

 

Caused by a message like:

 

"{\"$set\":{\"$schema\":\"/mediawiki/recentchange/1.0.0\",\"meta\":{\"uri\":\"https://it.wikipedia.org/wiki/Discussioni_utente:Valepert\",\"request_id\":\"c6d88f7f-9a3c-4b7e-a7cd-421b90ed4a46\",\"id\":\"48472b65-6635-4b65-990c-fcc5e66310e6\",\"dt\":\"2023-09-21T03:05:04Z\",\"domain\":\"it.wikipedia.org\",\"stream\":\"mediawiki.recentchange\",\"topic\":\"codfw.mediawiki.recentchange\",\"partition\":

{\"$numberInt\":\"0\"}

,\"offset\":{\"$numberInt\":\"628263911\"}},\"id\":{\"$numberInt\":\"326192030\"},\"type\":\"edit\",\"namespace\":{\"$numberInt\":\"3\"},\"title\":\"Discussioni utente:Valepert\",\"title_url\":\"https://it.wikipedia.org/wiki/Discussioni_utente:Valepert\",\"comment\":\"\355\240\274\355\275\270\",\"timestamp\":{\"$numberInt\":\"1695265504\"},\"user\":\"Valepert\",\"bot\":false,\"notify_url\":\"https://it.wikipedia.org/w/index.php?diff=135583987&oldid=135530929&rcid=326192030\",\"minor\":false,\"patrolled\":true,\"length\":{\"old\":

{\"$numberInt\":\"48232\"}

,\"new\":{\"$numberInt\":\"48253\"}},\"revision\":{\"old\":

{\"$numberInt\":\"135530929\"}

,\"new\":{\"$numberInt\":\"135583987\"}},\"server_url\":\"https://it.wikipedia.org\",\"server_name\":\"it.wikipedia.org\",\"server_script_path\":\"/w\",\"wiki\":\"itwiki\",\"parsedcomment\":\"\355\240\274\355\275\270\",\"_ts\":{\"$date\":{\"$numberLong\":\"1695272056821\"}},\"_stream_meta\":{\"sourceType\":\"kafka\",\"sourcePartition\":

{\"$numberInt\":\"0\"}

,\"sourceOffset\":{\"$numberLong\":\"10882591\"},\"timestamp\":{\"$date\":

{\"$numberLong\":\"1695272056821\"}

}},\"_id\":{\"$oid\":\"650c82f98c47efea135f73a3\"}}}"

 

This kafka:

kafkacat -C -b kafka.0x2f8.io:9093 -X security.protocol=SASL_PLAINTEXT -X sasl.mechanisms=PLAIN -X sasl.username=mongo -X sasl.password=mongodata_123 -C -t “topic name”

 

This streamProcessor:

  {

    id: '650bb29b49d37c600ee82da1',

    name: 'kafkaToCollection',

    lastModified: ISODate("2023-09-21T03:03:55.814Z"),

    state: 'FAILED',

    errorMsg: 'resource has no heartbeat',

    pipeline: [

      *{ '$source':

{ connectionName: 'TestKafka1', topic: 'wiki1' }

},*

      {

        '$merge': {

          into: { connectionName: 'TestAtlas1', db: 'test', coll: 'wiki1' }

        }

      }

    ]

  }

 

Happened after 

{ partitions: [

{ partition: 0, offset: 10806944 }

] }

Happened again after 10821979

 

Splunk

{ [-]

   _p: F

   attr: { [-]

     context: { [-]

       streamProcessorId: 650bb29b49d37c600ee82da1

       streamProcessorName: kafkaToCollection

       tenantId: 650761da7df3a953fbe8390c

     }

     error: invalid bytes in UTF8 string: could not parse JSON document

   }

   c: STREAMS

   ctx: thread373

   id: 75897

   kube:

{ [[+]|https://splunk.corp.mongodb.com/en-US/app/cloud/search?earliest=-60m%40m&latest=now&q=search%20index%3Dmhouse-dev%20650bb29b49d37c600ee82da1%20c%3DSTREAMS&display.page.search.mode=smart&dispatch.sample_ratio=1&sid=1695266377.8807063#]    }

   msg: encountered exception, exiting runLoop(): {error}

   s: E

   stream: stdout

   t:

{ [[+]|https://splunk.corp.mongodb.com/en-US/app/cloud/search?earliest=-60m%40m&latest=now&q=search%20index%3Dmhouse-dev%20650bb29b49d37c600ee82da1%20c%3DSTREAMS&display.page.search.mode=smart&dispatch.sample_ratio=1&sid=1695266377.8807063#]    }

   time: 2023-09-21T03:11:07.151782139Z

}