| import{_ as e,o as n,c as i,a as s,f as d}from"./app-d0623735.js";const a={},l=d(`<h1 id="集群运维命令" tabindex="-1"><a class="header-anchor" href="#集群运维命令" aria-hidden="true">#</a> 集群运维命令</h1><h2 id="展示集群配置" tabindex="-1"><a class="header-anchor" href="#展示集群配置" aria-hidden="true">#</a> 展示集群配置</h2><p>当前 IoTDB 支持使用如下 SQL 展示集群的关键参数：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>SHOW VARIABLES |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>示例：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB> show variables |
| +----------------------------------+-----------------------------------------------------------------+ |
| | Variable| Value| |
| +----------------------------------+-----------------------------------------------------------------+ |
| | ClusterName| defaultCluster| |
| | DataReplicationFactor| 1| |
| | SchemaReplicationFactor| 1| |
| | DataRegionConsensusProtocolClass| org.apache.iotdb.consensus.iot.IoTConsensus| |
| |SchemaRegionConsensusProtocolClass| org.apache.iotdb.consensus.ratis.RatisConsensus| |
| | ConfigNodeConsensusProtocolClass| org.apache.iotdb.consensus.ratis.RatisConsensus| |
| | TimePartitionInterval| 604800000| |
| | DefaultTTL(ms)| 9223372036854775807| |
| | ReadConsistencyLevel| strong| |
| | SchemaRegionPerDataNode| 1.0| |
| | DataRegionPerProcessor| 1.0| |
| | LeastDataRegionGroupNum| 5| |
| | SeriesSlotNum| 10000| |
| | SeriesSlotExecutorClass|org.apache.iotdb.commons.partition.executor.hash.BKDRHashExecutor| |
| | DiskSpaceWarningThreshold| 0.05| |
| +----------------------------------+-----------------------------------------------------------------+ |
| Total line number = 15 |
| It costs 0.225s |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p><strong>注意：</strong> 必须保证该 SQL 展示的所有配置参数在同一集群各个节点完全一致</p><h2 id="展示-confignode-信息" tabindex="-1"><a class="header-anchor" href="#展示-confignode-信息" aria-hidden="true">#</a> 展示 ConfigNode 信息</h2><p>当前 IoTDB 支持使用如下 SQL 展示 ConfigNode 的信息：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>SHOW CONFIGNODES |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>示例：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB> show confignodes |
| +------+-------+---------------+------------+--------+ |
| |NodeID| Status|InternalAddress|InternalPort| Role| |
| +------+-------+---------------+------------+--------+ |
| | 0|Running| 127.0.0.1| 10710| Leader| |
| | 1|Running| 127.0.0.1| 10711|Follower| |
| | 2|Running| 127.0.0.1| 10712|Follower| |
| +------+-------+---------------+------------+--------+ |
| Total line number = 3 |
| It costs 0.030s |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="confignode-状态定义" tabindex="-1"><a class="header-anchor" href="#confignode-状态定义" aria-hidden="true">#</a> ConfigNode 状态定义</h3><p>对 ConfigNode 各状态定义如下：</p><ul><li><strong>Running</strong>: ConfigNode 正常运行</li><li><strong>Unknown</strong>: ConfigNode 未正常上报心跳</li></ul><h2 id="展示-datanode-信息" tabindex="-1"><a class="header-anchor" href="#展示-datanode-信息" aria-hidden="true">#</a> 展示 DataNode 信息</h2><p>当前 IoTDB 支持使用如下 SQL 展示 DataNode 的信息：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>SHOW DATANODES |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>示例：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB> create timeseries root.sg.d1.s1 with datatype=BOOLEAN,encoding=PLAIN |
| Msg: The statement is executed successfully. |
| IoTDB> create timeseries root.sg.d2.s1 with datatype=BOOLEAN,encoding=PLAIN |
| Msg: The statement is executed successfully. |
| IoTDB> create timeseries root.ln.d1.s1 with datatype=BOOLEAN,encoding=PLAIN |
| Msg: The statement is executed successfully. |
| IoTDB> show datanodes |
| +------+-------+----------+-------+-------------+---------------+ |
| |NodeID| Status|RpcAddress|RpcPort|DataRegionNum|SchemaRegionNum| |
| +------+-------+----------+-------+-------------+---------------+ |
| | 1|Running| 127.0.0.1| 6667| 0| 1| |
| | 2|Running| 127.0.0.1| 6668| 0| 1| |
| +------+-------+----------+-------+-------------+---------------+ |
| |
| Total line number = 2 |
| It costs 0.007s |
| |
| IoTDB> insert into root.ln.d1(timestamp,s1) values(1,true) |
| Msg: The statement is executed successfully. |
| IoTDB> show datanodes |
| +------+-------+----------+-------+-------------+---------------+ |
| |NodeID| Status|RpcAddress|RpcPort|DataRegionNum|SchemaRegionNum| |
| +------+-------+----------+-------+-------------+---------------+ |
| | 1|Running| 127.0.0.1| 6667| 1| 1| |
| | 2|Running| 127.0.0.1| 6668| 0| 1| |
| +------+-------+----------+-------+-------------+---------------+ |
| Total line number = 2 |
| It costs 0.006s |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="datanode-状态定义" tabindex="-1"><a class="header-anchor" href="#datanode-状态定义" aria-hidden="true">#</a> DataNode 状态定义</h3><p>DataNode 的状态机如下图所示：<br><img style="width:100%;max-width:500px;max-height:500px;margin-left:auto;margin-right:auto;display:block;" src="https://alioss.timecho.com/docs/img/UserGuide/Cluster/DataNode-StateMachine-ZH.jpg?raw=true"></p><p>对 DataNode 各状态定义如下：</p><ul><li><strong>Running</strong>: DataNode 正常运行，可读可写</li><li><strong>Unknown</strong>: DataNode 未正常上报心跳，ConfigNode 认为该 DataNode 不可读写</li><li><strong>Removing</strong>: DataNode 正在移出集群，不可读写</li><li><strong>ReadOnly</strong>: DataNode 磁盘剩余空间低于 disk_warning_threshold（默认 5%），DataNode 可读但不能写入，不能同步数据</li></ul><h2 id="展示全部节点信息" tabindex="-1"><a class="header-anchor" href="#展示全部节点信息" aria-hidden="true">#</a> 展示全部节点信息</h2><p>当前 IoTDB 支持使用如下 SQL 展示全部节点的信息：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>SHOW CLUSTER |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>示例：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB> show cluster |
| +------+----------+-------+---------------+------------+ |
| |NodeID| NodeType| Status|InternalAddress|InternalPort| |
| +------+----------+-------+---------------+------------+ |
| | 0|ConfigNode|Running| 127.0.0.1| 10710| |
| | 1|ConfigNode|Running| 127.0.0.1| 10711| |
| | 2|ConfigNode|Running| 127.0.0.1| 10712| |
| | 3| DataNode|Running| 127.0.0.1| 10730| |
| | 4| DataNode|Running| 127.0.0.1| 10731| |
| | 5| DataNode|Running| 127.0.0.1| 10732| |
| +------+----------+-------+---------------+------------+ |
| Total line number = 6 |
| It costs 0.011s |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>在节点被关停后，它的状态也会改变，如下所示：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB> show cluster |
| +------+----------+-------+---------------+------------+ |
| |NodeID| NodeType| Status|InternalAddress|InternalPort| |
| +------+----------+-------+---------------+------------+ |
| | 0|ConfigNode|Running| 127.0.0.1| 10710| |
| | 1|ConfigNode|Unknown| 127.0.0.1| 10711| |
| | 2|ConfigNode|Running| 127.0.0.1| 10712| |
| | 3| DataNode|Running| 127.0.0.1| 10730| |
| | 4| DataNode|Running| 127.0.0.1| 10731| |
| | 5| DataNode|Running| 127.0.0.1| 10732| |
| +------+----------+-------+---------------+------------+ |
| Total line number = 6 |
| It costs 0.012s |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>展示全部节点的详细配置信息：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>SHOW CLUSTER DETAILS |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>示例：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB> show cluster details |
| +------+----------+-------+---------------+------------+-------------------+----------+-------+-------+-------------------+-----------------+ |
| |NodeID| NodeType| Status|InternalAddress|InternalPort|ConfigConsensusPort|RpcAddress|RpcPort|MppPort|SchemaConsensusPort|DataConsensusPort| |
| +------+----------+-------+---------------+------------+-------------------+----------+-------+-------+-------------------+-----------------+ |
| | 0|ConfigNode|Running| 127.0.0.1| 10710| 10720| | | | | | |
| | 1|ConfigNode|Running| 127.0.0.1| 10711| 10721| | | | | | |
| | 2|ConfigNode|Running| 127.0.0.1| 10712| 10722| | | | | | |
| | 3| DataNode|Running| 127.0.0.1| 10730| | 127.0.0.1| 6667| 10740| 10750| 10760| |
| | 4| DataNode|Running| 127.0.0.1| 10731| | 127.0.0.1| 6668| 10741| 10751| 10761| |
| | 5| DataNode|Running| 127.0.0.1| 10732| | 127.0.0.1| 6669| 10742| 10752| 10762| |
| +------+----------+-------+---------------+------------+-------------------+----------+-------+-------+-------------------+-----------------+ |
| Total line number = 6 |
| It costs 0.340s |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="展示-region-信息" tabindex="-1"><a class="header-anchor" href="#展示-region-信息" aria-hidden="true">#</a> 展示 Region 信息</h2><p>集群中以 SchemaRegion/DataRegion 作为元数据/数据的复制和管理单元，Region 的状态和分布对于系统运维和测试有很大帮助，如以下场景：</p><ul><li>查看集群中各个 Region 被分配到了哪些 DataNode，是否均衡</li><li>查看集群中各个 Region 被分配了哪些分区，是否均衡</li><li>查看集群中各个 RegionGroup 的 leader 被分配到了哪些 DataNode，是否均衡</li></ul><p>当前 IoTDB 支持使用如下 SQL 展示 Region 信息：</p><ul><li><code>SHOW REGIONS</code>: 展示所有 Region 分布</li><li><code>SHOW SCHEMA REGIONS</code>: 展示所有 SchemaRegion 分布</li><li><code>SHOW DATA REGIONS</code>: 展示所有 DataRegion 分布</li><li><code>SHOW (DATA|SCHEMA)? REGIONS OF DATABASE <sg1,sg2,...></code>: 展示指定数据库 <sg1,sg2,...> 对应的 Region 分布</li></ul><p>展示所有 Region 的分布：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB> show regions |
| +--------+------------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| |RegionId| Type| Status|Database|SeriesSlots|TimeSlots|DataNodeId|RpcAddress|RpcPort| Role| |
| +--------+------------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| | 0| DataRegion|Running|root.sg1| 1| 1| 1| 127.0.0.1| 6667|Follower| |
| | 0| DataRegion|Running|root.sg1| 1| 1| 2| 127.0.0.1| 6668| Leader| |
| | 0| DataRegion|Running|root.sg1| 1| 1| 3| 127.0.0.1| 6669|Follower| |
| | 1|SchemaRegion|Running|root.sg1| 1| 0| 1| 127.0.0.1| 6667|Follower| |
| | 1|SchemaRegion|Running|root.sg1| 1| 0| 2| 127.0.0.1| 6668|Follower| |
| | 1|SchemaRegion|Running|root.sg1| 1| 0| 3| 127.0.0.1| 6669| Leader| |
| | 2| DataRegion|Running|root.sg2| 1| 1| 1| 127.0.0.1| 6667| Leader| |
| | 2| DataRegion|Running|root.sg2| 1| 1| 2| 127.0.0.1| 6668|Follower| |
| | 2| DataRegion|Running|root.sg2| 1| 1| 3| 127.0.0.1| 6669|Follower| |
| | 3|SchemaRegion|Running|root.sg2| 1| 0| 1| 127.0.0.1| 6667|Follower| |
| | 3|SchemaRegion|Running|root.sg2| 1| 0| 2| 127.0.0.1| 6668| Leader| |
| | 3|SchemaRegion|Running|root.sg2| 1| 0| 3| 127.0.0.1| 6669|Follower| |
| +--------+------------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| Total line number = 12 |
| It costs 0.165s |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>展示 SchemaRegion 或 DataRegion 的分布：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB> show data regions |
| +--------+------------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| |RegionId| Type| Status|Database|SeriesSlots|TimeSlots|DataNodeId|RpcAddress|RpcPort| Role| |
| +--------+------------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| | 0| DataRegion|Running|root.sg1| 1| 1| 1| 127.0.0.1| 6667|Follower| |
| | 0| DataRegion|Running|root.sg1| 1| 1| 2| 127.0.0.1| 6668| Leader| |
| | 0| DataRegion|Running|root.sg1| 1| 1| 3| 127.0.0.1| 6669|Follower| |
| | 2| DataRegion|Running|root.sg2| 1| 1| 1| 127.0.0.1| 6667| Leader| |
| | 2| DataRegion|Running|root.sg2| 1| 1| 2| 127.0.0.1| 6668|Follower| |
| | 2| DataRegion|Running|root.sg2| 1| 1| 3| 127.0.0.1| 6669|Follower| |
| +--------+------------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| Total line number = 6 |
| It costs 0.011s |
| |
| IoTDB> show schema regions |
| +--------+------------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| |RegionId| Type| Status|Database|SeriesSlots|TimeSlots|DataNodeId|RpcAddress|RpcPort| Role| |
| +--------+------------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| | 1|SchemaRegion|Running|root.sg1| 1| 0| 1| 127.0.0.1| 6667|Follower| |
| | 1|SchemaRegion|Running|root.sg1| 1| 0| 2| 127.0.0.1| 6668|Follower| |
| | 1|SchemaRegion|Running|root.sg1| 1| 0| 3| 127.0.0.1| 6669| Leader| |
| | 3|SchemaRegion|Running|root.sg2| 1| 0| 1| 127.0.0.1| 6667|Follower| |
| | 3|SchemaRegion|Running|root.sg2| 1| 0| 2| 127.0.0.1| 6668| Leader| |
| | 3|SchemaRegion|Running|root.sg2| 1| 0| 3| 127.0.0.1| 6669|Follower| |
| +--------+------------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| Total line number = 6 |
| It costs 0.012s |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>展示指定数据库 <sg1,sg2,...> 对应的 Region 分布：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB> show regions of database root.sg1 |
| +--------+------------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| |RegionId| Type| Status|Database|SeriesSlots|TimeSlots|DataNodeId|RpcAddress|RpcPort| Role| |
| +--------+------------+-------+-- -----+-----------+---------+----------+----------+-------+--------+ |
| | 0| DataRegion|Running|root.sg1| 1| 1| 1| 127.0.0.1| 6667|Follower| |
| | 0| DataRegion|Running|root.sg1| 1| 1| 2| 127.0.0.1| 6668| Leader| |
| | 0| DataRegion|Running|root.sg1| 1| 1| 3| 127.0.0.1| 6669|Follower| |
| | 1|SchemaRegion|Running|root.sg1| 1| 0| 1| 127.0.0.1| 6667|Follower| |
| | 1|SchemaRegion|Running|root.sg1| 1| 0| 2| 127.0.0.1| 6668|Follower| |
| | 1|SchemaRegion|Running|root.sg1| 1| 0| 3| 127.0.0.1| 6669| Leader| |
| +--------+------------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| Total line number = 6 |
| It costs 0.007s |
| |
| IoTDB> show regions of database root.sg1, root.sg2 |
| +--------+------------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| |RegionId| Type| Status|Database|SeriesSlots|TimeSlots|DataNodeId|RpcAddress|RpcPort| Role| |
| +--------+------------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| | 0| DataRegion|Running|root.sg1| 1| 1| 1| 127.0.0.1| 6667|Follower| |
| | 0| DataRegion|Running|root.sg1| 1| 1| 2| 127.0.0.1| 6668| Leader| |
| | 0| DataRegion|Running|root.sg1| 1| 1| 3| 127.0.0.1| 6669|Follower| |
| | 1|SchemaRegion|Running|root.sg1| 1| 0| 1| 127.0.0.1| 6667|Follower| |
| | 1|SchemaRegion|Running|root.sg1| 1| 0| 2| 127.0.0.1| 6668|Follower| |
| | 1|SchemaRegion|Running|root.sg1| 1| 0| 3| 127.0.0.1| 6669| Leader| |
| | 2| DataRegion|Running|root.sg2| 1| 1| 1| 127.0.0.1| 6667| Leader| |
| | 2| DataRegion|Running|root.sg2| 1| 1| 2| 127.0.0.1| 6668|Follower| |
| | 2| DataRegion|Running|root.sg2| 1| 1| 3| 127.0.0.1| 6669|Follower| |
| | 3|SchemaRegion|Running|root.sg2| 1| 0| 1| 127.0.0.1| 6667|Follower| |
| | 3|SchemaRegion|Running|root.sg2| 1| 0| 2| 127.0.0.1| 6668| Leader| |
| | 3|SchemaRegion|Running|root.sg2| 1| 0| 3| 127.0.0.1| 6669|Follower| |
| +--------+------------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| Total line number = 12 |
| It costs 0.009s |
| |
| IoTDB> show data regions of database root.sg1, root.sg2 |
| +--------+----------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| |RegionId| Type| Status|Database|SeriesSlots|TimeSlots|DataNodeId|RpcAddress|RpcPort| Role| |
| +--------+----------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| | 0|DataRegion|Running|root.sg1| 1| 1| 1| 127.0.0.1| 6667|Follower| |
| | 0|DataRegion|Running|root.sg1| 1| 1| 2| 127.0.0.1| 6668| Leader| |
| | 0|DataRegion|Running|root.sg1| 1| 1| 3| 127.0.0.1| 6669|Follower| |
| | 2|DataRegion|Running|root.sg2| 1| 1| 1| 127.0.0.1| 6667| Leader| |
| | 2|DataRegion|Running|root.sg2| 1| 1| 2| 127.0.0.1| 6668|Follower| |
| | 2|DataRegion|Running|root.sg2| 1| 1| 3| 127.0.0.1| 6669|Follower| |
| +--------+----------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| Total line number = 6 |
| It costs 0.007s |
| |
| IoTDB> show schema regions of database root.sg1, root.sg2 |
| +--------+------------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| |RegionId| Type| Status|Database|SeriesSlots|TimeSlots|DataNodeId|RpcAddress|RpcPort| Role| |
| +--------+------------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| | 1|SchemaRegion|Running|root.sg1| 1| 0| 1| 127.0.0.1| 6667|Follower| |
| | 1|SchemaRegion|Running|root.sg1| 1| 0| 2| 127.0.0.1| 6668|Follower| |
| | 1|SchemaRegion|Running|root.sg1| 1| 0| 3| 127.0.0.1| 6669| Leader| |
| | 3|SchemaRegion|Running|root.sg2| 1| 0| 1| 127.0.0.1| 6667|Follower| |
| | 3|SchemaRegion|Running|root.sg2| 1| 0| 2| 127.0.0.1| 6668| Leader| |
| | 3|SchemaRegion|Running|root.sg2| 1| 0| 3| 127.0.0.1| 6669|Follower| |
| +--------+------------+-------+--------+-----------+---------+----------+----------+-------+--------+ |
| Total line number = 6 |
| It costs 0.009s |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="region-状态定义" tabindex="-1"><a class="header-anchor" href="#region-状态定义" aria-hidden="true">#</a> Region 状态定义</h3><p>Region 继承所在 DataNode 的状态，对 Region 各状态定义如下：</p><ul><li><strong>Running</strong>: Region 所在 DataNode 正常运行，Region 可读可写</li><li><strong>Unknown</strong>: Region 所在 DataNode 未正常上报心跳，ConfigNode 认为该 Region 不可读写</li><li><strong>Removing</strong>: Region 所在 DataNode 正在被移出集群，Region 不可读写</li><li><strong>ReadOnly</strong>: Region 所在 DataNode 的磁盘剩余空间低于 disk_warning_threshold（默认 5%），Region 可读，但不能写入，不能同步数据</li></ul><h2 id="展示集群槽信息" tabindex="-1"><a class="header-anchor" href="#展示集群槽信息" aria-hidden="true">#</a> 展示集群槽信息</h2><p>集群使用分区来管理元数据和数据，分区定义如下：</p><ul><li><strong>元数据分区</strong>：序列槽</li><li><strong>数据分区</strong>：<序列槽，时间分区槽></li></ul><p>可以使用以下 SQL 来查询分区对应信息：</p><h3 id="展示数据分区所在的-dataregion" tabindex="-1"><a class="header-anchor" href="#展示数据分区所在的-dataregion" aria-hidden="true">#</a> 展示数据分区所在的 DataRegion</h3><p>展示一个数据分区（或一个序列槽下的所有数据分区）所在的 DataRegion:</p><ul><li><code>SHOW DATA REGIONID OF root.sg WHERE SERIESSLOTID=s0 (AND TIMESLOTID=t0)</code></li></ul><p>示例:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB> show data regionid of root.sg where seriesslotid=5286 and timeslotid=0 |
| +--------+ |
| |RegionId| |
| +--------+ |
| | 1| |
| +--------+ |
| Total line number = 1 |
| It costs 0.006s |
| |
| IoTDB> show data regionid of root.sg where seriesslotid=5286 |
| +--------+ |
| |RegionId| |
| +--------+ |
| | 1| |
| | 2| |
| +--------+ |
| Total line number = 2 |
| It costs 0.006s |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="展示元数据分区所在的-schemaregion" tabindex="-1"><a class="header-anchor" href="#展示元数据分区所在的-schemaregion" aria-hidden="true">#</a> 展示元数据分区所在的 SchemaRegion</h3><p>展示一个元数据分区所在的 SchemaRegion：</p><ul><li><code>SHOW SCHEMA REGIONID OF root.sg WHERE SERIESSLOTID=s0</code></li></ul><p>示例:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB> show schema regionid of root.sg where seriesslotid=5286 |
| +--------+ |
| |RegionId| |
| +--------+ |
| | 0| |
| +--------+ |
| Total line number = 1 |
| It costs 0.007s |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="展示序列槽下的时间槽" tabindex="-1"><a class="header-anchor" href="#展示序列槽下的时间槽" aria-hidden="true">#</a> 展示序列槽下的时间槽</h3><p>展示一个序列槽下的所有时间槽：</p><ul><li><code>SHOW TIMESLOTID OF root.sg WHERE SERIESLOTID=s0 (AND STARTTIME=t1) (AND ENDTIME=t2)</code></li></ul><p>示例:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB> show timeslotid of root.sg where seriesslotid=5286 |
| +----------+ |
| |TimeSlotId| |
| +----------+ |
| | 0| |
| | 1000| |
| +----------+ |
| Total line number = 1 |
| It costs 0.007s |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="展示数据库的序列槽" tabindex="-1"><a class="header-anchor" href="#展示数据库的序列槽" aria-hidden="true">#</a> 展示数据库的序列槽</h3><p>展示一个数据库内，数据，元数据或是所有的序列槽：</p><ul><li><code>SHOW (DATA|SCHEMA)? SERIESSLOTID OF root.sg</code></li></ul><p>示例:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB> show data seriesslotid of root.sg |
| +------------+ |
| |SeriesSlotId| |
| +------------+ |
| | 5286| |
| +------------+ |
| Total line number = 1 |
| It costs 0.007s |
| |
| IoTDB> show schema seriesslotid of root.sg |
| +------------+ |
| |SeriesSlotId| |
| +------------+ |
| | 5286| |
| +------------+ |
| Total line number = 1 |
| It costs 0.006s |
| |
| IoTDB> show seriesslotid of root.sg |
| +------------+ |
| |SeriesSlotId| |
| +------------+ |
| | 5286| |
| +------------+ |
| Total line number = 1 |
| It costs 0.006s |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div>`,73);function o(r,t){return n(),i("div",null,[s(` |
| |
| Licensed to the Apache Software Foundation (ASF) under one |
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| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
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| `),l])}const c=e(a,[["render",o],["__file","Cluster-Maintenance.html.vue"]]);export{c as default}; |
