MongoDB坚持使用“创建索引”;索引生成:在生成期间排出接收到的写入”;消息
我在MongoDB坚持使用“创建索引”;索引生成:在生成期间排出接收到的写入”;消息,mongodb,mongodb-indexes,Mongodb,Mongodb Indexes,我在test集合中有4行: { "_id" : ObjectId("5f4ce50e19b13337216dd477"), "test" : 1 } { "_id" : ObjectId("5f4ce50e19b13337216dd478"), "test" : 2 } { "_id" : ObjectId("5f4ce50e19b13337216
test
集合中有4行:
{ "_id" : ObjectId("5f4ce50e19b13337216dd477"), "test" : 1 }
{ "_id" : ObjectId("5f4ce50e19b13337216dd478"), "test" : 2 }
{ "_id" : ObjectId("5f4ce50e19b13337216dd479"), "test" : 3 }
{ "_id" : ObjectId("5f4ce50e19b13337216dd47a"), "test" : 4 }
运行db.test.createIndex({test:1},{background:1})之后代码>要创建索引,它只是挂起。它至少挂了几个小时。以下是我在db.currentOp()中找到的有关此操作的内容:
{
"type" : "op",
"host" : "HOSTNAME:27017",
"desc" : "IndexBuildsCoordinatorMongod-13",
"active" : true,
"currentOpTime" : "2020-08-31T12:11:13.159+00:00",
"opid" : 8721867,
"secs_running" : NumberLong(20),
"microsecs_running" : NumberLong(20888590),
"op" : "command",
"ns" : "test.test",
"command" : {
"createIndexes" : "test",
"indexes" : [
{
"v" : 2,
"key" : {
"test" : 1
},
"name" : "test_1",
"background" : 1
}
],
"lsid" : {
"id" : UUID("07b43083-8ab9-4bcb-8768-919a3f27655f")
},
"$clusterTime" : {
"clusterTime" : Timestamp(1598875647, 409),
"signature" : {
"hash" : BinData(0,"+/YcdPyQriT8RL1LtFUhxe2BtCE="),
"keyId" : NumberLong("6861636045532823556")
}
},
"$db" : "test"
},
"msg" : "Index Build: draining writes received during build",
"numYields" : 0,
"locks" : {
},
"waitingForLock" : false,
"lockStats" : {
"ReplicationStateTransition" : {
"acquireCount" : {
"w" : NumberLong(6)
}
},
"Global" : {
"acquireCount" : {
"r" : NumberLong(1),
"w" : NumberLong(4)
}
},
"Database" : {
"acquireCount" : {
"r" : NumberLong(1),
"w" : NumberLong(4)
}
},
"Collection" : {
"acquireCount" : {
"r" : NumberLong(1),
"w" : NumberLong(3),
"W" : NumberLong(1)
}
},
"Mutex" : {
"acquireCount" : {
"r" : NumberLong(4)
}
}
},
"waitingForFlowControl" : false,
"flowControlStats" : {
"acquireCount" : NumberLong(3),
"timeAcquiringMicros" : NumberLong(1)
}
}
此索引生成:在生成期间排出接收到的写操作没有意义,因为在索引创建期间没有对测试集合进行读/写操作
此外,索引创建仅在非空集合中挂起。在空集合中成功创建索引
在这种情况下可能会出现什么问题?在MongoDB团队的帮助下,我终于想出了办法。
节点无法与其自身通信,因此尝试提交索引生成时将挂起。
这就是原因。添加keyfile修复了该问题:
rm -f mongo.keyfile
openssl rand -base64 756 > mongo.keyfile
chmod 400 mongo.keyfile
bin/mongod --config mongo.conf --keyFile mongo.keyfile
以下是MongoDB的Jira问题的链接,这些问题涉及该主题:
和
我将通过官方支持渠道报告这一情况。某些复制副本关闭也可能导致此问题。