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最近我们注意到从 mongodb 配置服务器到 mongos 服务器的大量传出流量:每天 750GB。我们使用具有 2 个分片和 3 个配置服务器的 mongodb 分片集群。Mongo 数据库统计:

mongos> db.stats()
{
    "raw" : {
        "shard1/shard1a:27017,shard1b:27017" : {
            "db" : "ecquant",
            "collections" : 4,
            "objects" : 539175,
            "avgObjSize" : 158073.44626883665,
            "dataSize" : 85229250392,
            "storageSize" : 86339362224,
            "numExtents" : 73,
            "indexes" : 3,
            "indexSize" : 43185632,
            "fileSize" : 90084212736,
            "nsSizeMB" : 16,
            "dataFileVersion" : {
                "major" : 4,
                "minor" : 5
            },
            "ok" : 1
        },
        "shard2/shard2a:27017,shard2b:27017" : {
            "db" : "ecquant",
            "collections" : 3,
            "objects" : 327497,
            "avgObjSize" : 257366.1745054153,
            "dataSize" : 84286650052,
            "storageSize" : 85961473456,
            "numExtents" : 61,
            "indexes" : 2,
            "indexSize" : 31632944,
            "fileSize" : 90084212736,
            "nsSizeMB" : 16,
            "dataFileVersion" : {
                "major" : 4,
                "minor" : 5
            },
            "ok" : 1
        }
    },
    "objects" : 866672,
    "avgObjSize" : 195593.72251209224,
    "dataSize" : 169515900444,
    "storageSize" : 172300835680,
    "numExtents" : 134,
    "indexes" : 5,
    "indexSize" : 74818576,
    "fileSize" : 180168425472,
    "ok" : 1
}

MongoDB版本:2.4.10

MongoDB 手册没有说明来自 mongo 配置服务器的高流量。有谁知道是什么原因造成的?

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