Merge branch '3.0' of https://github.com/taosdata/TDengine into 3.0
This commit is contained in:
Shengliang Guan
commit
0de54d0eb7
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@ -8,17 +8,17 @@ description: "创建、删除数据库，查看、修改数据库参数"
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```sql
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CREATE DATABASE [IF NOT EXISTS] db_name [database_options]
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database_options:
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database_option ...
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database_option: {
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BUFFER value
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| CACHEMODEL {'none' | 'last_row' | 'last_value' | 'both'}
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| CACHESIZE value
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| COMP {0 | 1 | 2}
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| DURATION value
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| FSYNC value
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| WAL_FSYNC_PERIOD value
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| MAXROWS value
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| MINROWS value
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| KEEP value
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@ -28,7 +28,7 @@ database_option: {
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| REPLICA value
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| RETENTIONS ingestion_duration:keep_duration ...
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| STRICT {'off' | 'on'}
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| WAL {1 | 2}
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| WAL_LEVEL {1 | 2}
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| VGROUPS value
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| SINGLE_STABLE {0 | 1}
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| WAL_RETENTION_PERIOD value
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@ -7,7 +7,7 @@ title: 容量规划
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## 服务端内存需求
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每个 Database 可以创建固定数目的 vgroup，默认 2 个 vgroup，在创建数据库时可以通过`vgroups <num>`参数来指定，其副本数由参数`replica <num>`指定。vgroup 中的每个副本会是一个 vnode；所以每个 vnode 占用的内存由以下几个参数决定：
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每个 Database 可以创建固定数目的 vgroup，默认 2 个 vgroup，在创建数据库时可以通过`vgroups <num>`参数来指定，其副本数由参数`replica <num>`指定。vgroup 中的每个副本会是一个 vnode；所以每个数据库占用的内存由以下几个参数决定：
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- vgroups
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- replica
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@ -18,9 +18,9 @@ title: 容量规划
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关于这些参数的详细说明请参考 [数据库管理](../taos-sql/database)。
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所以一个数据库所需要的内存大小等于 `vgroups * replica * (buffer + pages * pagesize + cachesize)`。
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一个数据库所需要的内存大小等于 `vgroups * replica * (buffer + pages * pagesize + cachesize)`。
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但要注意的是这些内存并不需要由单一服务器提供，而是由整个集群中所有数据节点共同负担，相当于由这些数据节点所在的服务器共同负担。如果集群中有不止一个数据库，则所需内存要累加，并由集群中所有服务器共同负担。更复杂的场景是如果集群中的数据节点并非在最初就一次性全部建立，而是随着使用中系统负载的增加服务器并增加数据节点，则新创建的数据库会导致新旧数据节点上的负载并不均衡，此时简单的理论计算并不能直接地简单使用，要结合各数据节点的负载情况。
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但要注意的是这些内存并不需要由单一服务器提供，而是由整个集群中所有数据节点共同负担，相当于由这些数据节点所在的服务器共同负担。如果集群中有不止一个数据库，则所需内存要累加，并由集群中所有服务器共同负担。更复杂的场景是如果集群中的数据节点并非在最初就一次性全部建立，而是随着使用中系统负载的增加逐步增加服务器并增加数据节点，则新创建的数据库会导致新旧数据节点上的负载并不均衡，此时简单的理论计算并不能直接使用，要结合各数据节点的负载情况。
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## 客户端内存需求
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@ -329,24 +329,24 @@
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./test.sh -f tsim/sync/oneReplica1VgElect.sim
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./test.sh -f tsim/sync/oneReplica5VgElect.sim
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# --- catalog
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# --- catalog ----
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./test.sh -f tsim/catalog/alterInCurrent.sim
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# --- scalar
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./test.sh -f tsim/scalar/in.sim
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./test.sh -f tsim/scalar/scalar.sim
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# ---- alter
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# ---- alter ----
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./test.sh -f tsim/alter/cached_schema_after_alter.sim
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./test.sh -f tsim/alter/dnode.sim
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./test.sh -f tsim/alter/table.sim
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# ---- cache
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# ---- cache ----
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./test.sh -f tsim/cache/new_metrics.sim
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./test.sh -f tsim/cache/restart_table.sim
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./test.sh -f tsim/cache/restart_metrics.sim
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# ---- column
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# ---- column ----
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./test.sh -f tsim/column/commit.sim
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./test.sh -f tsim/column/metrics.sim
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./test.sh -f tsim/column/table.sim
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@ -50,11 +50,8 @@ endi
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print ================== restart server to commit data into disk
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system sh/exec.sh -n dnode1 -s stop -x SIGINT
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sleep 3000
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system sh/exec.sh -n dnode1 -s start
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print ================== server restart completed
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sleep 3000
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sql connect
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sql use $db
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sql select * from $stb
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@ -1,13 +1,9 @@
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system sh/stop_dnodes.sh
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system sh/deploy.sh -n dnode1 -i 1
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system sh/cfg.sh -n dnode1 -c wallevel -v 2
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system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
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system sh/cfg.sh -n dnode1 -c udf -v 1
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print ========= start dnode1 as leader
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system sh/exec.sh -n dnode1 -s start
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sleep 1000
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sql connect
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print ======== step1 udf
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@ -63,13 +63,15 @@ sql show table distributed tb1
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sql select count(1) from tb1
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sql select count(tbcol) as b from tb1 where ts <= 1601481840000 interval(1m)
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sql select diff(tbcol) from tb1 where ts <= 1601481840000
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sql select diff(tbcol) from tb1 where tbcol > 5 and tbcol < 20
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sql select diff(tbcol) from tb1 where tbcol > 5 and tbcol < 20 order by ts
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sql select first(tbcol), last(tbcol) as b from tb1 where ts <= 1601481840000 interval(1m)
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sql select count(tbcol), avg(tbcol), max(tbcol), min(tbcol), sum(tbcol), stddev(tbcol) from tb1 where ts <= 1601481840000 partition by tgcol interval(1m)
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sql select count(tbcol), avg(tbcol), max(tbcol), min(tbcol), sum(tbcol), stddev(tbcol) from tb1 where ts <= 1601481840000 partition by tgcol order by tgcol
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sql select count(tbcol), avg(tbcol), max(tbcol), min(tbcol), sum(tbcol), stddev(tbcol) from tb1 where ts <= 1601481840000 partition by tgcol interval(1m)
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sql select count(tbcol), avg(tbcol), max(tbcol), min(tbcol), count(tbcol) from tb1 where ts <= 1601481840000 and ts >= 1601481800000 partition by tgcol interval(1m) fill(value, 0)
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sql select last_row(*) from tb1 where tbcol > 5 and tbcol < 20
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sql select _wstart, _wend, _wduration, _qstart, _qend, count(*) from tb1 interval(10s, 2s) sliding(10s)
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sql select count(tbcol), avg(tbcol), max(tbcol), min(tbcol), count(tbcol) from tb1 where ts <= 1601481840000 and ts >= 1601481800000 partition by tgcol interval(1m) fill(value, 0)
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sql select count(tbcol), avg(tbcol), max(tbcol), min(tbcol), count(tbcol) from tb1 where ts <= 1601481840000 and ts >= 1601481800000 partition by tgcol interval(1m) fill(value, 0) order by tgcol desc
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sql select log(tbcol), abs(tbcol), pow(tbcol, 2), sqrt(tbcol), sin(tbcol), cos(tbcol), tan(tbcol), asin(tbcol), acos(tbcol), atan(tbcol), ceil(tbcol), floor(tbcol), round(tbcol), atan(tbcol) from tb1
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sql select length("abcd1234"), char_length("abcd1234=-+*") from tb1
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sql select tbcol4, length(tbcol4), lower(tbcol4), upper(tbcol4), ltrim(tbcol4), rtrim(tbcol4), concat(tbcol4, tbcol5), concat_ws('_', tbcol4, tbcol5), substr(tbcol4, 1, 4) from tb1
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@ -94,6 +96,7 @@ sql select first(tbcol), last(tbcol) as b from stb where ts <= 1601481840000 and
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sql select first(tbcol), last(tbcol) as b from stb where ts <= 1601481840000 partition by tgcol interval(1m)
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sql select count(tbcol), avg(tbcol), max(tbcol), min(tbcol), sum(tbcol), stddev(tbcol) from stb where ts <= 1601481840000 partition by tgcol interval(1m)
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sql select count(tbcol), avg(tbcol), max(tbcol), min(tbcol), count(tbcol) from stb where ts <= 1601481840000 and ts >= 1601481800000 partition by tgcol interval(1m) fill(value, 0)
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sql select count(tbcol), avg(tbcol), max(tbcol), min(tbcol), count(tbcol) from stb where ts <= 1601481840000 and ts >= 1601481800000 and tgcol = 1 partition by tgcol interval(1m) fill(value, 0) order by tgcol desc
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sql select last_row(tbcol), stddev(tbcol) from stb where tbcol > 5 and tbcol < 20 group by tgcol
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sql select _wstart, _wend, _wduration, _qstart, _qend, count(*) from stb interval(10s, 2s) sliding(10s)
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sql select log(tbcol), abs(tbcol), pow(tbcol, 2), sqrt(tbcol), sin(tbcol), cos(tbcol), tan(tbcol), asin(tbcol), acos(tbcol), atan(tbcol), ceil(tbcol), floor(tbcol), round(tbcol), atan(tbcol) from stb
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