drop collection / database hang on sharded cluster

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    • Type: Bug
    • Resolution: Done
    • Priority: Major - P3
    • None
    • Affects Version/s: 5.0.0
    • Component/s: None
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    • ALL
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      • create a sharded cluster
      • connect to the mongos with mongo or mongosh
      • create a new collection
      • drop the collection

       

      [direct: mongos] admin> use test
switched to db test
[direct: mongos] test> db.createCollection("new", {})
{ ok: 1 }
[direct: mongos] test> db.new.drop()
   -> hangs indefinitely

       

      Show
      create a sharded cluster connect to the mongos with mongo or mongosh create a new collection drop the collection   [direct: mongos] admin> use test switched to db test [direct: mongos] test> db.createCollection( " new " , {}) { ok: 1 } [direct: mongos] test> db. new .drop() -> hangs indefinitely  
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      Since mongodb 5.0.0, on a sharded cluster with 3 config server, 2 shards and 1 mongos, dropping a collection or a database hang indefinitely without succeding

      On Ubuntu 20.04

      [direct: mongos] admin> sh.status()
shardingVersion
{
  _id: 1,
  minCompatibleVersion: 5,
  currentVersion: 6,
  clusterId: ObjectId("60f7e17702142e807fc3033d")
}
---
shards
[
  {
    _id: 'shard0000',
    host: 'localhost:27021',
    state: 1,
    topologyTime: Timestamp(2, 1626857864)
  },
  {
    _id: 'shard0001',
    host: 'localhost:27022',
    state: 1,
    topologyTime: Timestamp(2, 1626857876)
  }
]
---
active mongoses
[ { '5.0.0': 1 } ]
---
autosplit
{ 'Currently enabled': 'yes' }
---
balancer
{
  'Currently running': 'no',
  'Currently enabled': 'yes',
  'Failed balancer rounds in last 5 attempts': 0,
  'Migration Results for the last 24 hours': { '342': "Failed with error 'aborted', from shard0000 to shard0001" }
}
---
databases
[
  {
    database: { _id: 'config', primary: 'config', partitioned: true },
    collections: {
      'config.system.sessions': {
        shardKey: { _id: 1 },
        unique: false,
        balancing: true,
        chunkMetadata: [ { shard: 'shard0000', nChunks: 1024 } ],
        chunks: [
          'too many chunks to print, use verbose if you want to force print'
        ],
        tags: []
      }
    }
  }
]

       

       

            Assignee:
            Edwin Zhou
            Reporter:
            adrien petel
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              Created:
              Updated:
              Resolved: