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2018-02-06T14:41:05.130+0800 I SHARDING [Balancer] moveChunk result: { cause: { ok: 0.0, errmsg: "can't accept new chunks because there are still 1236 deletes from previous migration" }, ok: 0.0, errmsg: "moveChunk failed to engage TO-shard in the data transfer: :: caused by :: UnknownError: can't accept new chunks because there are still 1236 deletes...", code: 8 }
mongos集群数据分布不均匀,后台日志显示move chunk失败,我尝试手工迁移,报错一样
mongos> sh.moveChunk("recruit.externalResumeStorage", {"rid" : "1836776472", "sourceId" : 6}, "udb-f4rrmx")
{ "cause" : { "cause" : { "ok" : 0, "errmsg" : "can't accept new chunks because there are still 1236 deletes from previous migration" }, "ok" : 0, "errmsg" : "moveChunk failed to engage TO-shard in the data transfer: :: caused by :: UnknownError: can't accept new chunks because there are still 1236 deletes from previous migration", "code" : 8 }, "code" : 8, "ok" : 0, "errmsg" : "move failed" }应该是bug,参考https://jira.mongodb.org/browse/SERVER-14047
重启整个mongos集群,包括mongos节点,config节点,sharding节点
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