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mongo中locak库特别大是为什么？

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mongo中locak库特别大是为什么？

新集群，刚运行十几天。磁盘空间是9T，总数据量现在是500G，但是其中一个分片的local库已经800G了


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看了下是local库下的oplog.rs数据太多，有27亿，还在不断增长。

这个副本集的从节点挂了，是这个原因导致主节点的local库变大吗？


与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
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