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Xiong, Chen Xiao
83fa2f6615
Reviewed-by: Kacur, Michal <michal.kacur@t-systems.com> Co-authored-by: Xiong, Chen Xiao <chenxiaoxiong@huawei.com> Co-committed-by: Xiong, Chen Xiao <chenxiaoxiong@huawei.com>
141 lines
6.9 KiB
HTML
141 lines
6.9 KiB
HTML
<a name="UpdatePartitionCount"></a><a name="UpdatePartitionCount"></a>
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<h1 class="topictitle1">Changing Partition Quantity</h1>
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<div><div class="section"><h4 class="sectiontitle">Function</h4><p>This API is used to change the number of partitions in a specific stream.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">URI</h4><p>PUT /v2/{project_id}/streams/{stream_name}</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Path Parameters</caption><thead align="left"><tr><th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.2.3.2.5.1.1"><p>Parameter</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.2.3.2.5.1.2"><p>Mandatory</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.2.3.2.5.1.3"><p>Type</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="40%" id="mcps1.3.2.3.2.5.1.4"><p>Description</p>
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</th>
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</tr>
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</thead>
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<tbody><tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.3.2.5.1.1 "><p>project_id</p>
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</td>
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<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.3.2.5.1.2 "><p>Yes</p>
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</td>
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<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.3.2.5.1.3 "><p>String</p>
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</td>
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<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.2.3.2.5.1.4 "><p>Project ID.</p>
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</td>
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</tr>
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<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.3.2.5.1.1 "><p>stream_name</p>
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</td>
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<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.3.2.5.1.2 "><p>Yes</p>
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</td>
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<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.2.3.2.5.1.3 "><p>String</p>
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</td>
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<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.2.3.2.5.1.4 "><p>Name of the stream whose partition quantity needs to be changed.</p>
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<p>Maximum: <strong>64</strong></p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div class="section"><h4 class="sectiontitle">Request Parameters</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="UpdatePartitionCount__HeaderParameter" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Request header parameters</caption><thead align="left"><tr><th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.3.2.2.5.1.1"><p>Parameter</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.3.2.2.5.1.2"><p>Mandatory</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.3.2.2.5.1.3"><p>Type</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="40%" id="mcps1.3.3.2.2.5.1.4"><p>Description</p>
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</th>
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</tr>
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</thead>
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<tbody><tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.3.2.2.5.1.1 "><p>X-Auth-Token</p>
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</td>
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<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.3.2.2.5.1.2 "><p>Yes</p>
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</td>
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<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.3.2.2.5.1.3 "><p>String</p>
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</td>
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<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.3.2.2.5.1.4 "><p>User token</p>
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<p>The token can be obtained by calling the IAM API used to obtain a user token. The value of <strong>X-Subject-Token</strong> in the response header is the user token.</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="UpdatePartitionCount__request_UpdatePartitionCountReq" frame="border" border="1" rules="all"><caption><b>Table 3 </b>Request body parameters</caption><thead align="left"><tr><th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.3.3.2.5.1.1"><p>Parameter</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.3.3.2.5.1.2"><p>Mandatory</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.3.3.2.5.1.3"><p>Type</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="40%" id="mcps1.3.3.3.2.5.1.4"><p>Description</p>
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</th>
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</tr>
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</thead>
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<tbody><tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.3.3.2.5.1.1 "><p>stream_name</p>
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</td>
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<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.3.3.2.5.1.2 "><p>Yes</p>
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</td>
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<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.3.3.2.5.1.3 "><p>String</p>
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</td>
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<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.3.3.2.5.1.4 "><p>Name of the stream whose partition quantity needs to be changed.</p>
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<p>Maximum: <strong>64</strong></p>
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</td>
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</tr>
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<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.3.3.2.5.1.1 "><p>target_partition_count</p>
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</td>
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<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.3.3.2.5.1.2 "><p>Yes</p>
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</td>
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<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.3.3.2.5.1.3 "><p>Integer</p>
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</td>
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<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.3.3.2.5.1.4 "><p>Number of the target partitions</p>
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<p>The value is an integer greater than 0.</p>
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<p>If the value is greater than the number of current partitions, scaling-up is required. If the value is less than the number of current partitions, scale-down is required.</p>
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<p>Note:</p>
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<p>Each stream can be scaled up and down for five times within one hour. After a stream is scaled up or down, it cannot be scaled up or down again in the next one hour.</p>
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<p>Minimum: <strong>0</strong></p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div class="section"><h4 class="sectiontitle">Response Parameters</h4><p>None</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Example Requests</h4><p>Changing Partition Quantity</p>
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<pre class="screen">PUT https://{Endpoint}/v2/{project_id}/streams/{stream_name}
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{
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"stream_name" : "newstream",
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"target_partition_count" : 5
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}</pre>
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</div>
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<div class="section"><h4 class="sectiontitle">Example Responses</h4><p>None</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Status Codes</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="UpdatePartitionCount__status_code" frame="border" border="1" rules="all"><thead align="left"><tr><th align="left" class="cellrowborder" valign="top" width="15%" id="mcps1.3.7.2.1.3.1.1"><p>Status Code</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="85%" id="mcps1.3.7.2.1.3.1.2"><p>Description</p>
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</th>
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</tr>
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</thead>
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<tbody><tr><td class="cellrowborder" valign="top" width="15%" headers="mcps1.3.7.2.1.3.1.1 "><p>200</p>
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</td>
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<td class="cellrowborder" valign="top" width="85%" headers="mcps1.3.7.2.1.3.1.2 "><p>Normal response.</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div class="section"><h4 class="sectiontitle">Error Codes</h4><p>See <a href="ErrorCode.html">Error Codes</a>.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="topic_300000000.html">Stream Management</a></div>
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</div>
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</div>
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