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class="toc-item"><a class="vp-link toc-link level2 toc-link level2" href="#show-all-node-information">Show all Node information</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2 toc-link level2" href="#show-region-information">Show Region information</a></li><li><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level3 toc-link level3" href="#region-status-definition">Region status definition</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2 toc-link level2" href="#show-cluster-slots-information">Show cluster slots information</a></li><li><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level3 toc-link level3" href="#show-the-dataregion-where-a-datapartition-resides-in">Show the DataRegion where a DataPartition resides in</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3 toc-link level3" href="#show-the-schemaregion-where-a-schemapartition-resides-in">Show the SchemaRegion where a SchemaPartition resides in</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3 toc-link level3" href="#show-database-s-series-slots">Show Database&#39;s series slots</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3 toc-link level3" href="#show-the-time-partition-under-filtering-conditions">Show the time partition under filtering conditions.</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2 toc-link level2" href="#migrate-region">Migrate Region</a></li><!----><!--]--></ul><div class="toc-marker" style="top:-1.7rem;"></div></div><!--[--><!----><!--]--></aside></div><!--[--><!----><!--]--><div class="theme-hope-content"><!--

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--><h1 id="cluster-information-query-command" tabindex="-1"><a class="header-anchor" href="#cluster-information-query-command" aria-hidden="true">#</a> Cluster Information Query Command</h1><h2 id="show-variables" tabindex="-1"><a class="header-anchor" href="#show-variables" aria-hidden="true">#</a> Show Variables</h2><p>Currently, IoTDB supports showing key parameters of the cluster:</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>Eg:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB&gt; show variables
+----------------------------------+-----------------------------------------------------------------+
|                         Variables|                                                            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|
|             DataRegionPerDataNode|                                                              5.0|
|           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>Notice:</strong> Ensure that all key parameters displayed in this SQL are consist on each node in the same cluster</p><h2 id="show-confignode-information" tabindex="-1"><a class="header-anchor" href="#show-confignode-information" aria-hidden="true">#</a> Show ConfigNode information</h2><p>Currently, IoTDB supports showing ConfigNode information by the following SQL:</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>Eg:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB&gt; 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-status-definition" tabindex="-1"><a class="header-anchor" href="#confignode-status-definition" aria-hidden="true">#</a> ConfigNode status definition</h3><p>The ConfigNode statuses are defined as follows:</p><ul><li><strong>Running</strong>: The ConfigNode is running properly.</li><li><strong>Unknown</strong>: The ConfigNode doesn&#39;t report heartbeat properly. <ul><li>Can&#39;t receive data synchronized from other ConfigNodes</li><li>Won&#39;t be selected as the cluster ConfigNode-leader</li></ul></li></ul><h2 id="show-datanode-information" tabindex="-1"><a class="header-anchor" href="#show-datanode-information" aria-hidden="true">#</a> Show DataNode information</h2><p>Currently, IoTDB supports showing DataNode information by the following SQL:</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>Eg:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB&gt; create timeseries root.sg.d1.s1 with datatype=BOOLEAN,encoding=PLAIN
Msg: The statement is executed successfully.
IoTDB&gt; create timeseries root.sg.d2.s1 with datatype=BOOLEAN,encoding=PLAIN
Msg: The statement is executed successfully.
IoTDB&gt; create timeseries root.ln.d1.s1 with datatype=BOOLEAN,encoding=PLAIN
Msg: The statement is executed successfully.
IoTDB&gt; 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&gt; insert into root.ln.d1(timestamp,s1) values(1,true)
Msg: The statement is executed successfully.
IoTDB&gt; 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></div><h3 id="datanode-status-definition" tabindex="-1"><a class="header-anchor" href="#datanode-status-definition" aria-hidden="true">#</a> DataNode status definition</h3><p>The state machine of DataNode is shown in the figure below:<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-EN.jpg?raw=true"></p><p>The DataNode statuses are defined as follows:</p><ul><li><strong>Running</strong>: The DataNode is running properly and is readable and writable.</li><li><strong>Unknown</strong>: The DataNode doesn&#39;t report heartbeat properly, the ConfigNode considers the DataNode as unreadable and un-writable. <ul><li>The cluster is still readable and writable if some DataNodes are Unknown</li></ul></li><li><strong>Removing</strong>: The DataNode is being removed from the cluster and is unreadable and un-writable. <ul><li>The cluster is still readable and writable if some DataNodes are Removing</li></ul></li><li><strong>ReadOnly</strong>: The remaining disk space of DataNode is lower than disk_warning_threshold(default is 5%), the DataNode is readable but un-writable and cannot synchronize data. <ul><li>The cluster is still readable and writable if some DataNodes are ReadOnly</li><li>The schema and data in a ReadOnly DataNode is readable</li><li>The schema and data in a ReadOnly DataNode is deletable</li><li>A ReadOnly DataNode is creatable for schema, but un-writable for data</li><li>Data cannot be written to the cluster when all DataNodes are ReadOnly, but new Databases and schema is still creatable</li></ul></li></ul><p><strong>For a DataNode</strong>, the following table describes the impact of schema read, write, and deletion in different status:</p><table><thead><tr><th>DataNode status</th><th>readable</th><th>creatable</th><th>deletable</th></tr></thead><tbody><tr><td>Running</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td>Unknown</td><td>no</td><td>no</td><td>no</td></tr><tr><td>Removing</td><td>no</td><td>no</td><td>no</td></tr><tr><td>ReadOnly</td><td>yes</td><td>yes</td><td>yes</td></tr></tbody></table><p><strong>For a DataNode</strong>, the following table describes the impact of data read, write, and deletion in different status:</p><table><thead><tr><th>DataNode status</th><th>readable</th><th>writable</th><th>deletable</th></tr></thead><tbody><tr><td>Running</td><td>yes</td><td>yes</td><td>yes</td></tr><tr><td>Unknown</td><td>no</td><td>no</td><td>no</td></tr><tr><td>Removing</td><td>no</td><td>no</td><td>no</td></tr><tr><td>ReadOnly</td><td>yes</td><td>no</td><td>yes</td></tr></tbody></table><h2 id="show-all-node-information" tabindex="-1"><a class="header-anchor" href="#show-all-node-information" aria-hidden="true">#</a> Show all Node information</h2><p>Currently, IoTDB supports show the information of all Nodes by the following SQL:</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>Eg:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB&gt; 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>After a node is stopped, its status will change, as shown below:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB&gt; 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>Show the details of all nodes:</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>Eg:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB&gt; 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="show-region-information" tabindex="-1"><a class="header-anchor" href="#show-region-information" aria-hidden="true">#</a> Show Region information</h2><p>The cluster uses a SchemaRegion/DataRegion as a unit for schema/data replication and data management.<br> The Region status and distribution is helpful for system operation and maintenance testing, as shown in the following scenarios:</p><ul><li>Check which DataNodes are allocated to each Region in the cluster and whether they are balanced.</li><li>Check the partitions allocated to each Region in the cluster and whether they are balanced.</li><li>Check which DataNodes are allocated by the leaders of each RegionGroup in the cluster and whether they are balanced.</li></ul><p>Currently, IoTDB supports show Region information by the following SQL:</p><ul><li><code>SHOW REGIONS</code>: Show distribution of all Regions.</li><li><code>SHOW SCHEMA REGIONS</code>: Show distribution of all SchemaRegions.</li><li><code>SHOW DATA REGIONS</code>: Show distribution of all DataRegions.</li><li><code>SHOW (DATA|SCHEMA)? REGIONS OF DATABASE &lt;sg1,sg2,...&gt;</code>: Show Region distribution of specified StorageGroups.</li><li><code>SHOW (DATA|SCHEMA)? REGIONS ON NODEID &lt;id1,id2,...&gt;</code>: Show Region distribution on specified Nodes.</li><li><code>SHOW (DATA|SCHEMA)? REGIONS (OF DATABASE &lt;sg1,sg2,...&gt;)? (ON NODEID &lt;id1,id2,...&gt;)?</code>: Show Region distribution of specified StorageGroups on specified Nodes.</li></ul><p>Show distribution of all Regions:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB&gt; show regions
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|RegionId|        Type| Status|Database|SeriesSlotNum|TimeSlotNum|DataNodeId|RpcAddress|RpcPort|    Role|             CreateTime|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|       0|  DataRegion|Running|root.sg1|            1|          1|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:18.520|
|       0|  DataRegion|Running|root.sg1|            1|          1|         2| 127.0.0.1|   6668|  Leader|2023-03-07T17:32:18.749|
|       0|  DataRegion|Running|root.sg1|            1|          1|         3| 127.0.0.1|   6669|Follower|2023-03-07T17:32:19.013|
|       1|SchemaRegion|Running|root.sg1|            1|          0|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:18.111|
|       1|SchemaRegion|Running|root.sg1|            1|          0|         2| 127.0.0.1|   6668|Follower|2023-03-07T17:32:18.245|
|       1|SchemaRegion|Running|root.sg1|            1|          0|         3| 127.0.0.1|   6669|  Leader|2023-03-07T17:32:18.398|
|       2|  DataRegion|Running|root.sg2|            1|          1|         1| 127.0.0.1|   6667|  Leader|2023-03-07T17:32:19.834|
|       2|  DataRegion|Running|root.sg2|            1|          1|         2| 127.0.0.1|   6668|Follower|2023-03-07T17:32:20.011|
|       2|  DataRegion|Running|root.sg2|            1|          1|         3| 127.0.0.1|   6669|Follower|2023-03-07T17:32:20.395|
|       3|SchemaRegion|Running|root.sg2|            1|          0|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:19.232|
|       3|SchemaRegion|Running|root.sg2|            1|          0|         2| 127.0.0.1|   6668|  Leader|2023-03-07T17:32:19.450|
|       3|SchemaRegion|Running|root.sg2|            1|          0|         3| 127.0.0.1|   6669|Follower|2023-03-07T17:32:19.637|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
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>The SeriesSlotNum refers to the number of the seriesSlots in the region. In the same light, the TimeSlotNum means the number of the timeSlots in the region.</p><p>Show the distribution of SchemaRegions or DataRegions:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB&gt; show data regions
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|RegionId|        Type| Status|Database|SeriesSlotNum|TimeSlotNum|DataNodeId|RpcAddress|RpcPort|    Role|             CreateTime|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|       0|  DataRegion|Running|root.sg1|            1|          1|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:18.520|
|       0|  DataRegion|Running|root.sg1|            1|          1|         2| 127.0.0.1|   6668|  Leader|2023-03-07T17:32:18.749|
|       0|  DataRegion|Running|root.sg1|            1|          1|         3| 127.0.0.1|   6669|Follower|2023-03-07T17:32:19.013|
|       2|  DataRegion|Running|root.sg2|            1|          1|         1| 127.0.0.1|   6667|  Leader|2023-03-07T17:32:19.834|
|       2|  DataRegion|Running|root.sg2|            1|          1|         2| 127.0.0.1|   6668|Follower|2023-03-07T17:32:20.011|
|       2|  DataRegion|Running|root.sg2|            1|          1|         3| 127.0.0.1|   6669|Follower|2023-03-07T17:32:20.395|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
Total line number = 6
It costs 0.011s

IoTDB&gt; show schema regions
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|RegionId|        Type| Status|Database|SeriesSlotNum|TimeSlotNum|DataNodeId|RpcAddress|RpcPort|    Role|             CreateTime|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|       1|SchemaRegion|Running|root.sg1|            1|          0|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:18.111|
|       1|SchemaRegion|Running|root.sg1|            1|          0|         2| 127.0.0.1|   6668|Follower|2023-03-07T17:32:18.245|
|       1|SchemaRegion|Running|root.sg1|            1|          0|         3| 127.0.0.1|   6669|  Leader|2023-03-07T17:32:18.398|
|       3|SchemaRegion|Running|root.sg2|            1|          0|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:19.232|
|       3|SchemaRegion|Running|root.sg2|            1|          0|         2| 127.0.0.1|   6668|  Leader|2023-03-07T17:32:19.450|
|       3|SchemaRegion|Running|root.sg2|            1|          0|         3| 127.0.0.1|   6669|Follower|2023-03-07T17:32:19.637|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
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>Show Region distribution of specified DataBases:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB&gt; show regions of database root.sg1
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|RegionId|        Type| Status|Database|SeriesSlotNum|TimeSlotNum|DataNodeId|RpcAddress|RpcPort|    Role|             CreateTime|
+--------+------------+-------+-- -----+-------------+-----------+----------+----------+-------+--------+-----------------------+
|       0|  DataRegion|Running|root.sg1|            1|          1|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:18.520|
|       0|  DataRegion|Running|root.sg1|            1|          1|         2| 127.0.0.1|   6668|  Leader|2023-03-07T17:32:18.749|
|       0|  DataRegion|Running|root.sg1|            1|          1|         3| 127.0.0.1|   6669|Follower|2023-03-07T17:32:19.013|
|       1|SchemaRegion|Running|root.sg1|            1|          0|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:18.111|
|       1|SchemaRegion|Running|root.sg1|            1|          0|         2| 127.0.0.1|   6668|Follower|2023-03-07T17:32:18.245|
|       1|SchemaRegion|Running|root.sg1|            1|          0|         3| 127.0.0.1|   6669|  Leader|2023-03-07T17:32:18.398|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
Total line number = 6
It costs 0.007s

IoTDB&gt; show regions of database root.sg1, root.sg2
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|RegionId|        Type| Status|Database|SeriesSlotNum|TimeSlotNum|DataNodeId|RpcAddress|RpcPort|    Role|             CreateTime|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|       0|  DataRegion|Running|root.sg1|            1|          1|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:18.520|
|       0|  DataRegion|Running|root.sg1|            1|          1|         2| 127.0.0.1|   6668|  Leader|2023-03-07T17:32:18.749|
|       0|  DataRegion|Running|root.sg1|            1|          1|         3| 127.0.0.1|   6669|Follower|2023-03-07T17:32:19.013|
|       1|SchemaRegion|Running|root.sg1|            1|          0|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:18.111|
|       1|SchemaRegion|Running|root.sg1|            1|          0|         2| 127.0.0.1|   6668|Follower|2023-03-07T17:32:18.245|
|       1|SchemaRegion|Running|root.sg1|            1|          0|         3| 127.0.0.1|   6669|  Leader|2023-03-07T17:32:18.398|
|       2|  DataRegion|Running|root.sg2|            1|          1|         1| 127.0.0.1|   6667|  Leader|2023-03-07T17:32:19.834|
|       2|  DataRegion|Running|root.sg2|            1|          1|         2| 127.0.0.1|   6668|Follower|2023-03-07T17:32:20.011|
|       2|  DataRegion|Running|root.sg2|            1|          1|         3| 127.0.0.1|   6669|Follower|2023-03-07T17:32:20.395|
|       3|SchemaRegion|Running|root.sg2|            1|          0|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:19.232|
|       3|SchemaRegion|Running|root.sg2|            1|          0|         2| 127.0.0.1|   6668|  Leader|2023-03-07T17:32:19.450|
|       3|SchemaRegion|Running|root.sg2|            1|          0|         3| 127.0.0.1|   6669|Follower|2023-03-07T17:32:19.637|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
Total line number = 12
It costs 0.009s

IoTDB&gt; show data regions of database root.sg1, root.sg2
+--------+----------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|RegionId|      Type| Status|Database|SeriesSlotNum|TimeSlotNum|DataNodeId|RpcAddress|RpcPort|    Role|             CreateTime|
+--------+----------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|       0|DataRegion|Running|root.sg1|            1|          1|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:18.520|
|       0|DataRegion|Running|root.sg1|            1|          1|         2| 127.0.0.1|   6668|  Leader|2023-03-07T17:32:18.749|
|       0|DataRegion|Running|root.sg1|            1|          1|         3| 127.0.0.1|   6669|Follower|2023-03-07T17:32:19.013|
|       2|DataRegion|Running|root.sg2|            1|          1|         1| 127.0.0.1|   6667|  Leader|2023-03-07T17:32:19.834|
|       2|DataRegion|Running|root.sg2|            1|          1|         2| 127.0.0.1|   6668|Follower|2023-03-07T17:32:20.011|
|       2|DataRegion|Running|root.sg2|            1|          1|         3| 127.0.0.1|   6669|Follower|2023-03-07T17:32:20.395|
+--------+----------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
Total line number = 6
It costs 0.007s

IoTDB&gt; show schema regions of database root.sg1, root.sg2
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|RegionId|        Type| Status|Database|SeriesSlotNum|TimeSlotNum|DataNodeId|RpcAddress|RpcPort|    Role|             CreateTime|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|       1|SchemaRegion|Running|root.sg1|            1|          0|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:18.111|
|       1|SchemaRegion|Running|root.sg1|            1|          0|         2| 127.0.0.1|   6668|Follower|2023-03-07T17:32:18.245|
|       1|SchemaRegion|Running|root.sg1|            1|          0|         3| 127.0.0.1|   6669|  Leader|2023-03-07T17:32:18.398|
|       3|SchemaRegion|Running|root.sg2|            1|          0|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:19.232|
|       3|SchemaRegion|Running|root.sg2|            1|          0|         2| 127.0.0.1|   6668|  Leader|2023-03-07T17:32:19.450|
|       3|SchemaRegion|Running|root.sg2|            1|          0|         3| 127.0.0.1|   6669|Follower|2023-03-07T17:32:19.637|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
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><p>Show Region distribution on specified Nodes:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB&gt; show regions on nodeid 1
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|RegionId|        Type| Status|Database|SeriesSlotNum|TimeSlotNum|DataNodeId|RpcAddress|RpcPort|    Role|             CreateTime|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|       0|  DataRegion|Running|root.sg1|            1|          1|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:18.520|
|       1|SchemaRegion|Running|root.sg1|            1|          0|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:18.111|
|       2|  DataRegion|Running|root.sg2|            1|          1|         1| 127.0.0.1|   6667|  Leader|2023-03-07T17:32:19.834|
|       3|SchemaRegion|Running|root.sg2|            1|          0|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:19.232|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
Total line number = 4
It costs 0.165s

IoTDB&gt; show regions on nodeid 1, 2
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|RegionId|        Type| Status|Database|SeriesSlotNum|TimeSlotNum|DataNodeId|RpcAddress|RpcPort|    Role|             CreateTime|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|       0|  DataRegion|Running|root.sg1|            1|          1|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:18.520|
|       0|  DataRegion|Running|root.sg1|            1|          1|         2| 127.0.0.1|   6668|  Leader|2023-03-07T17:32:18.749|
|       1|SchemaRegion|Running|root.sg1|            1|          0|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:18.111|
|       1|SchemaRegion|Running|root.sg1|            1|          0|         2| 127.0.0.1|   6668|Follower|2023-03-07T17:32:18.245|
|       2|  DataRegion|Running|root.sg2|            1|          1|         1| 127.0.0.1|   6667|  Leader|2023-03-07T17:32:19.834|
|       2|  DataRegion|Running|root.sg2|            1|          1|         2| 127.0.0.1|   6668|Follower|2023-03-07T17:32:19.011|
|       3|SchemaRegion|Running|root.sg2|            1|          0|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:19.232|
|       3|SchemaRegion|Running|root.sg2|            1|          0|         2| 127.0.0.1|   6668|  Leader|2023-03-07T17:32:19.450|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
Total line number = 8
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 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>Show Region distribution of specified StorageGroups on specified Nodes：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB&gt; show regions of database root.sg1 on nodeid 1
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|RegionId|        Type| Status|Database|SeriesSlotNum|TimeSlotNum|DataNodeId|RpcAddress|RpcPort|    Role|             CreateTime|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|       0|  DataRegion|Running|root.sg1|            1|          1|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:18.520|
|       1|SchemaRegion|Running|root.sg1|            1|          0|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:18.111|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
Total line number = 2
It costs 0.165s

IoTDB&gt; show data regions of database root.sg1, root.sg2 on nodeid 1, 2 
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|RegionId|        Type| Status|Database|SeriesSlotNum|TimeSlotNum|DataNodeId|RpcAddress|RpcPort|    Role|             CreateTime|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
|       0|  DataRegion|Running|root.sg1|            1|          1|         1| 127.0.0.1|   6667|Follower|2023-03-07T17:32:18.520|
|       0|  DataRegion|Running|root.sg1|            1|          1|         2| 127.0.0.1|   6668|  Leader|2023-03-07T17:32:18.749|
|       2|  DataRegion|Running|root.sg2|            1|          1|         1| 127.0.0.1|   6667|  Leader|2023-03-07T17:32:19.834|
|       2|  DataRegion|Running|root.sg2|            1|          1|         2| 127.0.0.1|   6668|Follower|2023-03-07T17:32:19.011|
+--------+------------+-------+--------+-------------+-----------+----------+----------+-------+--------+-----------------------+
Total line number = 4
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 class="line-number"></div><div class="line-number"></div></div></div><h3 id="region-status-definition" tabindex="-1"><a class="header-anchor" href="#region-status-definition" aria-hidden="true">#</a> Region status definition</h3><p>Region inherits the status of the DataNode where the Region resides. And Region states are defined as follows:</p><ul><li><strong>Running</strong>: The DataNode where the Region resides is running properly, the Region is readable and writable.</li><li><strong>Unknown</strong>: The DataNode where the Region resides doesn&#39;t report heartbeat properly, the ConfigNode considers the Region is unreadable and un-writable.</li><li><strong>Removing</strong>: The DataNode where the Region resides is being removed from the cluster, the Region is unreadable and un-writable.</li><li><strong>ReadOnly</strong>: The available disk space of the DataNode where the Region resides is lower than the disk_warning_threshold(5% by default). The Region is readable but un-writable and cannot synchronize data.</li></ul><p><strong>The status switchover of a Region doesn&#39;t affect the belonged RegionGroup</strong>,<br> when setting up a multi-replica cluster(i.e. the number of schema replica and data replica is greater than 1),<br> other Running Regions of the same RegionGroup ensure the high availability of RegionGroup.</p><p><strong>For a RegionGroup:</strong></p><ul><li>It&#39;s readable, writable and deletable if and only if more than half of its Regions are Running</li><li>It&#39;s unreadable, un-writable and un-deletable when the number of its Running Regions is less than half</li></ul><h2 id="show-cluster-slots-information" tabindex="-1"><a class="header-anchor" href="#show-cluster-slots-information" aria-hidden="true">#</a> Show cluster slots information</h2><p>The cluster uses partitions for schema and data arrangement, the partition defined as follows:</p><ul><li><code>SchemaPartition</code>: SeriesSlot</li><li><code>DataPartition</code>: &lt;SeriesSlot, SeriesTimeSlot&gt;</li></ul><p>More details can be found in the <a href="/UserGuide/latest/stage/Cluster/Cluster-Concept.html" class="">Cluster-Concept</a> document.</p><p>The cluster slots information can be shown by the following SQLs:</p><h3 id="show-the-dataregion-where-a-datapartition-resides-in" tabindex="-1"><a class="header-anchor" href="#show-the-dataregion-where-a-datapartition-resides-in" aria-hidden="true">#</a> Show the DataRegion where a DataPartition resides in</h3><p>Show the DataRegion where a DataPartition of a certain database or device resides in:</p><ul><li><code>SHOW DATA REGIONID WHERE (DATABASE=root.xxx |DEVICE=root.xxx.xxx) (AND TIME=xxxxx)?</code></li></ul><p>Specifications:</p><ol><li><p>&quot;DEVICE&quot; corresponds to a unique SeriesSlot for the device path, while &quot;TIME&quot; corresponds to a unique SeriesTimeSlot for either a timestamp or a universal time.</p></li><li><p>&quot;DATABASE&quot; and &quot;DEVICE&quot; must begin with &quot;root&quot;. If the path does not exist, it will return empty instead of reporting an error, as will be seen below.</p></li><li><p>Currently, &quot;DATABASE&quot; and &quot;DEVICE&quot; do not support wildcard matching or multiple queries. If it contains a wildcard character(such as * or **) or multiple DATABASE and DEVICE, an error will be reported, as will be seen below.</p></li><li><p>&quot;TIME&quot; supports both timestamps and universal dates. For timestamp, it must be greater than or equal to 0. For universal time, it need to be no earlier than 1970-01-01 00:00:00.</p></li></ol><p>Eg:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB&gt; show data regionid where device=root.sg.m1.d1
+--------+
|RegionId|
+--------+
|       1|
|       2|
+--------+
Total line number = 2
It costs 0.006s

IoTDB&gt; show data regionid where device=root.sg.m1.d1 and time=604800000
+--------+
|RegionId|
+--------+
|       1|
+--------+
Total line number = 1
It costs 0.006s

IoTDB&gt; show data regionid where device=root.sg.m1.d1 and time=1970-01-08T00:00:00.000
+--------+
|RegionId|
+--------+
|       1|
+--------+
Total line number = 1
It costs 0.006s

IoTDB&gt; show data regionid where database=root.sg
+--------+
|RegionId|
+--------+
|       1|
|       2|
+--------+
Total line number = 2
It costs 0.006s

IoTDB&gt; show data regionid where database=root.sg and time=604800000
+--------+
|RegionId|
+--------+
|       1|
+--------+
Total line number = 1
It costs 0.006s

IoTDB&gt; show data regionid where database=root.sg and time=1970-01-08T00:00:00.000
+--------+
|RegionId|
+--------+
|       1|
+--------+
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 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="show-the-schemaregion-where-a-schemapartition-resides-in" tabindex="-1"><a class="header-anchor" href="#show-the-schemaregion-where-a-schemapartition-resides-in" aria-hidden="true">#</a> Show the SchemaRegion where a SchemaPartition resides in</h3><p>Show the SchemaRegion where a DataPartition of a certain database or device resides in:</p><ul><li><code>SHOW SCHEMA REGIONID WHERE (DATABASE=root.xxx | DEVICE=root.xxx.xxx)</code></li></ul><p>Eg:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB&gt; show schema regionid where device=root.sg.m1.d2
+--------+
|RegionId|
+--------+
|       0|
+--------+
Total line number = 1
It costs 0.007s

IoTDB&gt; show schema regionid where database=root.sg
+--------+
|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 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="show-database-s-series-slots" tabindex="-1"><a class="header-anchor" href="#show-database-s-series-slots" aria-hidden="true">#</a> Show Database&#39;s series slots</h3><p>Show the data/schema series slots related to a database:</p><ul><li><code>SHOW (DATA|SCHEMA) SERIESSLOTID WHERE DATABASE=root.xxx</code></li></ul><p>Eg:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB&gt; show data seriesslotid where database = root.sg
+------------+
|SeriesSlotId|
+------------+
|        5286|
+------------+
Total line number = 1
It costs 0.007s

IoTDB&gt; show schema seriesslotid where database = 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></div><h3 id="show-the-time-partition-under-filtering-conditions" tabindex="-1"><a class="header-anchor" href="#show-the-time-partition-under-filtering-conditions" aria-hidden="true">#</a> Show the time partition under filtering conditions.</h3><p>Show the TimePartition of a certain device, database, or DataRegion.</p><ul><li><code>SHOW TIMEPARTITION WHERE (DEVICE=root.a.b |REGIONID = r0 | DATABASE=root.xxx) (AND STARTTIME=t1)?(AND ENDTIME=t2)?</code></li></ul><p>Specifications:</p><ol><li>TimePartition is short for SeriesTimeSlotId.</li><li>If REGIONID is the Id of schemaRegion, return empty instead of reporting an error.</li><li>REGIONID do not support multiple queries. If it contains multiple REGIONID, an error will be reported, as will be seen below.</li><li>&quot;STARTTIME&quot; and &quot;ENDTIME&quot; support both timestamps and universal dates. For timestamp, it must be greater than or equal to 0. For universal time, it need to be no earlier than 1970-01-01 00:00:00.</li><li>The StartTime in the returned result is the starting time of the TimePartition&#39;s corresponding time interval.</li></ol><p>Eg:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB&gt; show timePartition where device=root.sg.m1.d1
+-------------------------------------+
|TimePartition|              StartTime|
+-------------------------------------+
|            0|1970-01-01T00:00:00.000|
+-------------------------------------+
Total line number = 1
It costs 0.007s

IoTDB&gt; show timePartition where regionId = 1
+-------------------------------------+
|TimePartition|              StartTime|
+-------------------------------------+
|            0|1970-01-01T00:00:00.000|
+-------------------------------------+
Total line number = 1
It costs 0.007s

IoTDB&gt; show timePartition where database = root.sg 
+-------------------------------------+
|TimePartition|              StartTime|
+-------------------------------------+
|            0|1970-01-01T00:00:00.000|
+-------------------------------------+
|            1|1970-01-08T00:00:00.000|
+-------------------------------------+
Total line number = 2
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 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><h4 id="count-the-time-partition-under-filtering-conditions" tabindex="-1"><a class="header-anchor" href="#count-the-time-partition-under-filtering-conditions" aria-hidden="true">#</a> Count the time partition under filtering conditions.</h4><p>Count the TimePartition of a certain device, database, or DataRegion.</p><ul><li><code>COUNT TIMEPARTITION WHERE (DEVICE=root.a.b |REGIONID = r0 | DATABASE=root.xxx) (AND STARTTIME=t1)?(AND ENDTIME=t2)?</code></li></ul><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB&gt; count timePartition where device=root.sg.m1.d1
+--------------------+
|count(timePartition)|
+--------------------+
|                   1|
+--------------------+
Total line number = 1
It costs 0.007s

IoTDB&gt; count timePartition where regionId = 1
+--------------------+
|count(timePartition)|
+--------------------+
|                   1|
+--------------------+
Total line number = 1
It costs 0.007s

IoTDB&gt; count timePartition where database = root.sg 
+--------------------+
|count(timePartition)|
+--------------------+
|                   2|
+--------------------+
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 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><h2 id="migrate-region" tabindex="-1"><a class="header-anchor" href="#migrate-region" aria-hidden="true">#</a> Migrate Region</h2><p>The following sql can be applied to manually migrate a region, for load balancing or other purposes.</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>MIGRATE REGION &lt;Region-id&gt; FROM &lt;original-DataNodeId&gt; TO &lt;dest-DataNodeId&gt;
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB&gt; SHOW REGIONS
+--------+------------+-------+-------------+------------+----------+----------+----------+-------+--------+
|RegionId|        Type| Status|     Database|SeriesSlotId|TimeSlotId|DataNodeId|RpcAddress|RpcPort|    Role|
+--------+------------+-------+-------------+------------+----------+----------+----------+-------+--------+
|       0|SchemaRegion|Running|root.test.g_0|         500|         0|         3| 127.0.0.1|   6670|  Leader|
|       0|SchemaRegion|Running|root.test.g_0|         500|         0|         4| 127.0.0.1|   6681|Follower|
|       0|SchemaRegion|Running|root.test.g_0|         500|         0|         5| 127.0.0.1|   6668|Follower|
|       1|  DataRegion|Running|root.test.g_0|         183|       200|         1| 127.0.0.1|   6667|Follower|
|       1|  DataRegion|Running|root.test.g_0|         183|       200|         3| 127.0.0.1|   6670|Follower|
|       1|  DataRegion|Running|root.test.g_0|         183|       200|         7| 127.0.0.1|   6669|  Leader|
|       2|  DataRegion|Running|root.test.g_0|         181|       200|         3| 127.0.0.1|   6670|  Leader|
|       2|  DataRegion|Running|root.test.g_0|         181|       200|         4| 127.0.0.1|   6681|Follower|
|       2|  DataRegion|Running|root.test.g_0|         181|       200|         5| 127.0.0.1|   6668|Follower|
|       3|  DataRegion|Running|root.test.g_0|         180|       200|         1| 127.0.0.1|   6667|Follower|
|       3|  DataRegion|Running|root.test.g_0|         180|       200|         5| 127.0.0.1|   6668|  Leader|
|       3|  DataRegion|Running|root.test.g_0|         180|       200|         7| 127.0.0.1|   6669|Follower|
|       4|  DataRegion|Running|root.test.g_0|         179|       200|         3| 127.0.0.1|   6670|Follower|
|       4|  DataRegion|Running|root.test.g_0|         179|       200|         4| 127.0.0.1|   6681|  Leader|
|       4|  DataRegion|Running|root.test.g_0|         179|       200|         7| 127.0.0.1|   6669|Follower|
|       5|  DataRegion|Running|root.test.g_0|         179|       200|         1| 127.0.0.1|   6667|  Leader|
|       5|  DataRegion|Running|root.test.g_0|         179|       200|         4| 127.0.0.1|   6681|Follower|
|       5|  DataRegion|Running|root.test.g_0|         179|       200|         5| 127.0.0.1|   6668|Follower|
+--------+------------+-------+-------------+------------+----------+----------+----------+-------+--------+
Total line number = 18
It costs 0.161s

IoTDB&gt; MIGRATE REGION 1 FROM 3 TO 4
Msg: The statement is executed successfully.

IoTDB&gt; SHOW REGIONS
+--------+------------+-------+-------------+------------+----------+----------+----------+-------+--------+
|RegionId|        Type| Status|     Database|SeriesSlotId|TimeSlotId|DataNodeId|RpcAddress|RpcPort|    Role|
+--------+------------+-------+-------------+------------+----------+----------+----------+-------+--------+
|       0|SchemaRegion|Running|root.test.g_0|         500|         0|         3| 127.0.0.1|   6670|  Leader|
|       0|SchemaRegion|Running|root.test.g_0|         500|         0|         4| 127.0.0.1|   6681|Follower|
|       0|SchemaRegion|Running|root.test.g_0|         500|         0|         5| 127.0.0.1|   6668|Follower|
|       1|  DataRegion|Running|root.test.g_0|         183|       200|         1| 127.0.0.1|   6667|Follower|
|       1|  DataRegion|Running|root.test.g_0|         183|       200|         4| 127.0.0.1|   6681|Follower|
|       1|  DataRegion|Running|root.test.g_0|         183|       200|         7| 127.0.0.1|   6669|  Leader|
|       2|  DataRegion|Running|root.test.g_0|         181|       200|         3| 127.0.0.1|   6670|  Leader|
|       2|  DataRegion|Running|root.test.g_0|         181|       200|         4| 127.0.0.1|   6681|Follower|
|       2|  DataRegion|Running|root.test.g_0|         181|       200|         5| 127.0.0.1|   6668|Follower|
|       3|  DataRegion|Running|root.test.g_0|         180|       200|         1| 127.0.0.1|   6667|Follower|
|       3|  DataRegion|Running|root.test.g_0|         180|       200|         5| 127.0.0.1|   6668|  Leader|
|       3|  DataRegion|Running|root.test.g_0|         180|       200|         7| 127.0.0.1|   6669|Follower|
|       4|  DataRegion|Running|root.test.g_0|         179|       200|         3| 127.0.0.1|   6670|Follower|
|       4|  DataRegion|Running|root.test.g_0|         179|       200|         4| 127.0.0.1|   6681|  Leader|
|       4|  DataRegion|Running|root.test.g_0|         179|       200|         7| 127.0.0.1|   6669|Follower|
|       5|  DataRegion|Running|root.test.g_0|         179|       200|         1| 127.0.0.1|   6667|  Leader|
|       5|  DataRegion|Running|root.test.g_0|         179|       200|         4| 127.0.0.1|   6681|Follower|
|       5|  DataRegion|Running|root.test.g_0|         179|       200|         5| 127.0.0.1|   6668|Follower|
+--------+------------+-------+-------------+------------+----------+----------+----------+-------+--------+
Total line number = 18
It costs 0.165s
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