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| <h2 title="Enum DeleteGranularity" class="title">Enum DeleteGranularity</h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li>java.lang.Enum<<a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html" title="enum in org.apache.iceberg.deletes">DeleteGranularity</a>></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.iceberg.deletes.DeleteGranularity</li> |
| </ul> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd>java.io.Serializable, java.lang.Comparable<<a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html" title="enum in org.apache.iceberg.deletes">DeleteGranularity</a>></dd> |
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| <br> |
| <pre>public enum <span class="typeNameLabel">DeleteGranularity</span> |
| extends java.lang.Enum<<a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html" title="enum in org.apache.iceberg.deletes">DeleteGranularity</a>></pre> |
| <div class="block">An enum that represents the granularity of deletes. |
| |
| <p>Under partition granularity, delete writers are directed to group deletes for different data |
| files into one delete file. This strategy tends to reduce the total number of delete files in the |
| table. However, a scan for a single data file will require reading delete information for |
| multiple data files even if those other files are not required for the scan. All irrelevant |
| deletes will be discarded by readers but reading this extra information will cause overhead. The |
| overhead can potentially be mitigated via delete file caching. |
| |
| <p>Under file granularity, delete writers always organize deletes by their target data file, |
| creating separate delete files for each referenced data file. This strategy ensures the job |
| planning does not assign irrelevant deletes to data files and readers only load necessary delete |
| information. However, it also increases the total number of delete files in the table and may |
| require a more aggressive approach for delete file compaction. |
| |
| <p>Currently, this configuration is only applicable to position deletes. |
| |
| <p>Each granularity has its own benefits and drawbacks and should be picked based on a use case. |
| Regular delete compaction is still required regardless of which granularity is chosen. It is also |
| possible to use one granularity for ingestion and another one for table maintenance.</div> |
| </li> |
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| <h3>Enum Constant Summary</h3> |
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| <caption><span>Enum Constants</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Enum Constant and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html#FILE">FILE</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html#PARTITION">PARTITION</a></span></code> </td> |
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| <td class="colFirst"><code>static <a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html" title="enum in org.apache.iceberg.deletes">DeleteGranularity</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html#fromString-java.lang.String-">fromString</a></span>(java.lang.String valueAsString)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>java.lang.String</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html#toString--">toString</a></span>()</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html" title="enum in org.apache.iceberg.deletes">DeleteGranularity</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html#valueOf-java.lang.String-">valueOf</a></span>(java.lang.String name)</code> |
| <div class="block">Returns the enum constant of this type with the specified name.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html" title="enum in org.apache.iceberg.deletes">DeleteGranularity</a>[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html#values--">values</a></span>()</code> |
| <div class="block">Returns an array containing the constants of this enum type, in |
| the order they are declared.</div> |
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| <h4>FILE</h4> |
| <pre>public static final <a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html" title="enum in org.apache.iceberg.deletes">DeleteGranularity</a> FILE</pre> |
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| <h4>PARTITION</h4> |
| <pre>public static final <a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html" title="enum in org.apache.iceberg.deletes">DeleteGranularity</a> PARTITION</pre> |
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| <h4>values</h4> |
| <pre>public static <a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html" title="enum in org.apache.iceberg.deletes">DeleteGranularity</a>[] values()</pre> |
| <div class="block">Returns an array containing the constants of this enum type, in |
| the order they are declared. This method may be used to iterate |
| over the constants as follows: |
| <pre> |
| for (DeleteGranularity c : DeleteGranularity.values()) |
| System.out.println(c); |
| </pre></div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>an array containing the constants of this enum type, in the order they are declared</dd> |
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| <h4>valueOf</h4> |
| <pre>public static <a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html" title="enum in org.apache.iceberg.deletes">DeleteGranularity</a> valueOf(java.lang.String name)</pre> |
| <div class="block">Returns the enum constant of this type with the specified name. |
| The string must match <i>exactly</i> an identifier used to declare an |
| enum constant in this type. (Extraneous whitespace characters are |
| not permitted.)</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - the name of the enum constant to be returned.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the enum constant with the specified name</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code>java.lang.IllegalArgumentException</code> - if this enum type has no constant with the specified name</dd> |
| <dd><code>java.lang.NullPointerException</code> - if the argument is null</dd> |
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| <pre>public java.lang.String toString()</pre> |
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| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>toString</code> in class <code>java.lang.Enum<<a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html" title="enum in org.apache.iceberg.deletes">DeleteGranularity</a>></code></dd> |
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| <pre>public static <a href="../../../../org/apache/iceberg/deletes/DeleteGranularity.html" title="enum in org.apache.iceberg.deletes">DeleteGranularity</a> fromString(java.lang.String valueAsString)</pre> |
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