Moving an empty chunk seems to be failing in version 8
[direct: mongos] test> sh.status()
shardingVersion
{ _id: 1, clusterId: ObjectId('676183050a9357e7d5c24eef') }
---
shards
[
{
_id: 'rs1',
host: 'rs1/ip-172-31-30-2.eu-west-2.compute.internal:27018,ip-172-31-29-94.eu-west-2.compute.internal:27018,ip-172-31-30-31.eu-west-2.compute.internal:27018',
state: 1,
topologyTime: Timestamp({ t: 1734445880, i: 10 }),
replSetConfigVersion: Long('-1')
},
{
_id: 'rs2',
host: 'rs2/ip-172-31-22-238.eu-west-2.compute.internal:27018,ip-172-31-23-10.eu-west-2.compute.internal:27018,ip-172-31-25-45.eu-west-2.compute.internal:27018',
state: 1,
topologyTime: Timestamp({ t: 1734445904, i: 8 }),
replSetConfigVersion: Long('-1')
}
]
---
active mongoses
[ { '8.0.4': 1 } ]
---
autosplit
{ 'Currently enabled': 'yes' }
---
balancer
{
'Currently enabled': 'yes',
'Currently running': 'no',
'Failed balancer rounds in last 5 attempts': 0,
'Migration Results for the last 24 hours': {
'3': 'Success',
'7': "Failed with error 'aborted', from rs1 to rs2"
}
}
---
shardedDataDistribution
[
{
ns: 'config.system.sessions',
shards: [
{
shardName: 'rs1',
numOrphanedDocs: 0,
numOwnedDocuments: 36,
ownedSizeBytes: 3564,
orphanedSizeBytes: 0
}
]
},
{
ns: 'mydb.airflow',
shards: [
{
shardName: 'rs1',
numOrphanedDocs: 0,
numOwnedDocuments: 0,
ownedSizeBytes: 0,
orphanedSizeBytes: 0
}
]
}
]
---
databases
[
{
database: { _id: 'config', primary: 'config', partitioned: true },
collections: {
'config.system.sessions': {
shardKey: { _id: 1 },
unique: false,
balancing: true,
chunkMetadata: [ { shard: 'rs1', nChunks: 1 } ],
chunks: [
{ min: { _id: MinKey() }, max: { _id: MaxKey() }, 'on shard': 'rs1', 'last modified': Timestamp({ t: 1, i: 0 }) }
],
tags: []
}
}
},
{
database: {
_id: 'mydb',
primary: 'rs2',
version: {
uuid: UUID('4beb4da9-d85b-4231-a9aa-4e8dc705fa23'),
timestamp: Timestamp({ t: 1734447260, i: 3 }),
lastMod: 1
}
},
collections: {
'mydb.airflow': {
shardKey: { a: 1, b: 1 },
unique: false,
balancing: true,
chunkMetadata: [ { shard: 'rs1', nChunks: 2 } ],
chunks: [
{ min: { a: MinKey(), b: MinKey() }, max: { a: 50000, b: 50000 }, 'on shard': 'rs1', 'last modified': Timestamp({ t: 2, i: 1 }) },
{ min: { a: 50000, b: 50000 }, max: { a: MaxKey(), b: MaxKey() }, 'on shard': 'rs1', 'last modified': Timestamp({ t: 2, i: 2 }) }
],
tags: []
}
}
}
]
[direct: mongos] test>
[direct: mongos] test>
[direct: mongos] test> sh.moveChunk("mydb.airflow", {a: 50000, b: 50000}, "rs2")
MongoServerError[OperationFailed]: Command request failed on source shard. :: caused by :: Data transfer error: migrate failed: ExceededTimeLimit: Migration failed because the orphans cleanup routine didn't clear yet a portion of the range being migrated that was previously owned by the recipient shard.
