mongodb - 随笔分类 - papering

mongodb.connections.current

摘要：connPoolStats — MongoDB Manual https://docs.mongodb.com/manual/reference/command/connPoolStats/ connPoolStats The command connPoolStats returns inform 阅读全文

posted @ 2021-06-30 14:44 papering 阅读(444) 评论(0) 推荐(0)

mongodb丢失数据的原因剖析 - 迎风飘来的专栏 - CSDN博客 https://blog.csdn.net/yibing548/article/details/50844310

摘要：mongodb丢失数据的原因剖析 - 迎风飘来的专栏 - CSDN博客 https://blog.csdn.net/yibing548/article/details/50844310 阅读全文

posted @ 2019-02-20 10:03 papering 阅读(427) 评论(0) 推荐(0)

Pymongo NotMasterError while fetching count of the collection as per query from MongoDB in DRF

摘要：django rest framework - Pymongo NotMasterError while fetching count of the collection as per query from MongoDB in DRF - Stack Overflow https://stacko 阅读全文

posted @ 2019-01-09 20:20 papering 阅读(915) 评论(0) 推荐(0)

dbAdmin 不等于 root 集合中角色

摘要：dbAdmin root 集合中角色 use admin创建 db.createUser( { user: "tmp_rw_56756", pwd: "tmp4242vdfd", roles: [ "readWrite", "dbAdmin" ] }) repl_test:PRIMARY> db.s 阅读全文

posted @ 2018-12-28 16:43 papering 阅读(367) 评论(0) 推荐(0)

源码 mongod.lock shutdown

摘要：https://github.com/mongodb/mongo/blob/master/src/mongo/db/db.cpp 1、退出原理 /proc/" << pid 判断文件是否存在 2、 mongod.lock 内容为进程号，位置在mongond.conf中的dbpath配置项下 [ro 阅读全文

posted @ 2018-12-28 14:57 papering 阅读(242) 评论(0) 推荐(0)

源码 ServerParameter

摘要：总结 1、服务器参数类型和设置时刻 https://github.com/mongodb/mongo/blob/master/src/mongo/db/server_parameters.h 阅读全文

posted @ 2018-12-28 14:43 papering 阅读(293) 评论(0) 推荐(0)

分析 mongodb admin local 修改ip 热修改

摘要：分析 mongodb admin local mongo 热修改复制集更改ip前[root@e ~]# mongo mongodb://admin:adminpwd123@10.144.114.152MongoDB shell version v3.4.0connecting to: mongo 阅读全文

posted @ 2018-12-28 10:45 papering 阅读(1067) 评论(0) 推荐(0)

Ensure Indexes Fit in RAM

摘要：Ensure Indexes Fit in RAM — MongoDB Manual https://docs.mongodb.com/manual/tutorial/ensure-indexes-fit-ram/ 阅读全文

posted @ 2018-11-26 11:52 papering 阅读(391) 评论(0) 推荐(0)

mongoexport

摘要：导数据数据同步 mongodb无自增id 数据断点 mongoexport — MongoDB Manual https://docs.mongodb.com/manual/reference/program/mongoexport/ [root@e dump]# mongoexport --po 阅读全文

posted @ 2018-11-26 10:00 papering 阅读(679) 评论(0) 推荐(0)

Create an Index

摘要：The following example creates a single key descending index on the name field: db.collection.createIndex( { name: -1 } ) db.collection.createIndex( { 阅读全文

posted @ 2018-11-26 09:14 papering 阅读(245) 评论(0) 推荐(0)

"errmsg" : "distinct too big, 16mb cap",

摘要：repl_test:PRIMARY> show dbs admin 0.000GB direct_vote_resource 16.487GB local 14.860GB personas 30.809GB recommendation 0.370GB statistics_vis... 阅读全文

posted @ 2018-11-23 15:30 papering 阅读(1517) 评论(0) 推荐(0)

mongo 统计数据磁盘消耗

摘要：repl_test:PRIMARY> show dbsadmin 0.000GBdirect_vote_resource 16.474GBlocal 14.860GBpersonas 30.771GBrecommendation 0.370GBstatistics_visit 0.137GBsupe 阅读全文

posted @ 2018-11-22 11:52 papering 阅读(277) 评论(0) 推荐(0)

E QUERY [main] SyntaxError: identifier starts immediately after numeric literal mongodb mapReduce 异常分析集合命名规范

摘要：异常信息 repl_test:PRIMARY> db.0917order_totals_b.find()2018-09-28T15:13:03.992+0800 E QUERY [main] SyntaxError: identifier starts immediately after numer 阅读全文

posted @ 2018-09-28 15:22 papering 阅读(556) 评论(0) 推荐(0)

Create a /etc/yum.repos.d/mongodb-org-4.0.repo

摘要：Install MongoDB Community Edition on Red Hat Enterprise or CentOS Linux — MongoDB Manual https://docs.mongodb.com/manual/tutorial/install-mongodb-on-r 阅读全文

posted @ 2018-08-27 23:14 papering 阅读(613) 评论(0) 推荐(1)

Hashed Indexes Geospatial Index

摘要：Indexes — MongoDB Manual https://docs.mongodb.com/manual/indexes/ 地理索引哈希索引阅读全文

posted @ 2018-07-27 11:41 papering 阅读(243) 评论(0) 推荐(0)

map reduce

摘要：db.collection.mapReduce() — MongoDB Manual 3.6 https://docs.mongodb.com/manual/reference/method/db.collection.mapReduce/ 阅读全文

posted @ 2018-05-22 12:41 papering 阅读(152) 评论(0) 推荐(0)

mongodb与sql聚合对应图 M

摘要：mongodb与sql聚合对应图 M - CSDN博客 http://blog.csdn.net/u011930016/article/details/49422425 SQL Terms, Functions, and Concepts MongoDB Aggregation Operators 阅读全文

posted @ 2017-12-06 13:43 papering 阅读(292) 评论(0) 推荐(0)

mongo-java-driver

摘要：http://mvnrepository.com/artifact/org.mongodb/mongo-java-driver/3.5.0 阅读全文

posted @ 2017-11-27 23:53 papering 阅读(326) 评论(0) 推荐(0)

HDFS vs. MongoDB

摘要：HDFS MongoDB 共同点 http://www.mongoing.com/wp-content/uploads/2016/08/MDBSH2016/TJ_MongoDB+Spark.pdf 横向扩展，支持TB-PB级数据量低成本， x86 数据自动多份复制支持非结构化数据差异点粗颗粒阅读全文

posted @ 2017-11-23 16:59 papering 阅读(992) 评论(0) 推荐(0)

二级索引

摘要：二级索引全局二级索引 - Amazon DynamoDB http://docs.amazonaws.cn/amazondynamodb/latest/developerguide/GSI.html 属性投影查询全局二级索引扫描全局二级索引表与全局二级索引之间的数据同步全局二级索引的预置阅读全文

posted @ 2017-11-23 16:57 papering 阅读(467) 评论(0) 推荐(0)

papering

随笔分类 - mongodb