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Chen, Junjie
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Reviewed-by: Eotvos, Oliver <oliver.eotvos@t-systems.com> Co-authored-by: Chen, Junjie <chenjunjie@huawei.com> Co-committed-by: Chen, Junjie <chenjunjie@huawei.com>
14 lines
1.5 KiB
HTML
14 lines
1.5 KiB
HTML
<a name="functiongraph_03_0320"></a><a name="functiongraph_03_0320"></a>
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<h1 class="topictitle1">What Do LATEST and TRIM_HORIZON Mean in DIS Trigger Configuration?</h1>
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<div id="body1552904025825"><p id="functiongraph_03_0320__p37081338132">Cursors <strong id="functiongraph_03_0320__b1926484055918">LATEST</strong> and <strong id="functiongraph_03_0320__b186021938135919">TRIM_HORIZON</strong> specify the start points for reading data in Data Ingestion Service (DIS) streams.</p>
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<ul id="functiongraph_03_0320__ul92618276146"><li id="functiongraph_03_0320__li1340944101517"><strong id="functiongraph_03_0320__b13976104635910">TRIM_HORIZON</strong>: Data is read from the earliest valid record stored in the partition.<p id="functiongraph_03_0320__p16733195191517">For example, a tenant used a DIS stream to upload three pieces of data A1, A2, and A3. Assuming that A1 expires but A2 and A3 are still valid after a period of time, if the tenant specifies <strong id="functiongraph_03_0320__b11971956739">TRIM_HORIZON</strong> for downloading data, only A2 and A3 can be downloaded.</p>
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</li><li id="functiongraph_03_0320__li1919112407145"><strong id="functiongraph_03_0320__b19225551185910">LATEST</strong>: Data is read from the latest record in the partition. This option ensures that the most recent data in the partition is read.</li></ul>
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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="functiongraph_03_0100.html">Trigger Management FAQs</a></div>
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</div>
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</div>
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