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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.iceberg</a></div> |
| <h2 title="Interface ExpireSnapshots" class="title">Interface ExpireSnapshots</h2> |
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| <dt>All Superinterfaces:</dt> |
| <dd><code><a href="PendingUpdate.html" title="interface in org.apache.iceberg">PendingUpdate</a><java.util.List<<a href="Snapshot.html" title="interface in org.apache.iceberg">Snapshot</a>>></code></dd> |
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| <hr> |
| <pre>public interface <span class="typeNameLabel">ExpireSnapshots</span> |
| extends <a href="PendingUpdate.html" title="interface in org.apache.iceberg">PendingUpdate</a><java.util.List<<a href="Snapshot.html" title="interface in org.apache.iceberg">Snapshot</a>>></pre> |
| <div class="block">API for removing old <a href="Snapshot.html" title="interface in org.apache.iceberg"><code>snapshots</code></a> from a table. |
| <p> |
| This API accumulates snapshot deletions and commits the new list to the table. This API does not |
| allow deleting the current snapshot. |
| <p> |
| When committing, these changes will be applied to the latest table metadata. Commit conflicts |
| will be resolved by applying the changes to the new latest metadata and reattempting the commit. |
| <p> |
| Manifest files that are no longer used by valid snapshots will be deleted. Data files that were |
| deleted by snapshots that are expired will be deleted. <a href="#deleteWith(java.util.function.Consumer)"><code>deleteWith(Consumer)</code></a> can be used |
| to pass an alternative deletion method. |
| |
| <a href="PendingUpdate.html#apply()"><code>PendingUpdate.apply()</code></a> returns a list of the snapshots that will be removed.</div> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary"> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><a href="ExpireSnapshots.html" title="interface in org.apache.iceberg">ExpireSnapshots</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#cleanExpiredFiles(boolean)">cleanExpiredFiles</a></span>​(boolean clean)</code></th> |
| <td class="colLast"> |
| <div class="block">Allows expiration of snapshots without any cleanup of underlying manifest or data files.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="ExpireSnapshots.html" title="interface in org.apache.iceberg">ExpireSnapshots</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#deleteWith(java.util.function.Consumer)">deleteWith</a></span>​(java.util.function.Consumer<java.lang.String> deleteFunc)</code></th> |
| <td class="colLast"> |
| <div class="block">Passes an alternative delete implementation that will be used for manifests and data files.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><a href="ExpireSnapshots.html" title="interface in org.apache.iceberg">ExpireSnapshots</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#executeDeleteWith(java.util.concurrent.ExecutorService)">executeDeleteWith</a></span>​(java.util.concurrent.ExecutorService executorService)</code></th> |
| <td class="colLast"> |
| <div class="block">Passes an alternative executor service that will be used for manifests and data files deletion.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="ExpireSnapshots.html" title="interface in org.apache.iceberg">ExpireSnapshots</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#expireOlderThan(long)">expireOlderThan</a></span>​(long timestampMillis)</code></th> |
| <td class="colLast"> |
| <div class="block">Expires all snapshots older than the given timestamp.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="ExpireSnapshots.html" title="interface in org.apache.iceberg">ExpireSnapshots</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#expireSnapshotId(long)">expireSnapshotId</a></span>​(long snapshotId)</code></th> |
| <td class="colLast"> |
| <div class="block">Expires a specific <a href="Snapshot.html" title="interface in org.apache.iceberg"><code>Snapshot</code></a> identified by id.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="ExpireSnapshots.html" title="interface in org.apache.iceberg">ExpireSnapshots</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#retainLast(int)">retainLast</a></span>​(int numSnapshots)</code></th> |
| <td class="colLast"> |
| <div class="block">Retains the most recent ancestors of the current snapshot.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a id="methods.inherited.from.class.org.apache.iceberg.PendingUpdate"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from interface org.apache.iceberg.<a href="PendingUpdate.html" title="interface in org.apache.iceberg">PendingUpdate</a></h3> |
| <code><a href="PendingUpdate.html#apply()">apply</a>, <a href="PendingUpdate.html#commit()">commit</a>, <a href="PendingUpdate.html#updateEvent()">updateEvent</a></code></li> |
| </ul> |
| </li> |
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| <!-- ============ METHOD DETAIL ========== --> |
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| <h3>Method Detail</h3> |
| <a id="expireSnapshotId(long)"> |
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| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>expireSnapshotId</h4> |
| <pre class="methodSignature"><a href="ExpireSnapshots.html" title="interface in org.apache.iceberg">ExpireSnapshots</a> expireSnapshotId​(long snapshotId)</pre> |
| <div class="block">Expires a specific <a href="Snapshot.html" title="interface in org.apache.iceberg"><code>Snapshot</code></a> identified by id.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>snapshotId</code> - long id of the snapshot to expire</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>this for method chaining</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="expireOlderThan(long)"> |
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| <h4>expireOlderThan</h4> |
| <pre class="methodSignature"><a href="ExpireSnapshots.html" title="interface in org.apache.iceberg">ExpireSnapshots</a> expireOlderThan​(long timestampMillis)</pre> |
| <div class="block">Expires all snapshots older than the given timestamp.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>timestampMillis</code> - a long timestamp, as returned by <code>System.currentTimeMillis()</code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>this for method chaining</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="retainLast(int)"> |
| <!-- --> |
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| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>retainLast</h4> |
| <pre class="methodSignature"><a href="ExpireSnapshots.html" title="interface in org.apache.iceberg">ExpireSnapshots</a> retainLast​(int numSnapshots)</pre> |
| <div class="block">Retains the most recent ancestors of the current snapshot. |
| <p> |
| If a snapshot would be expired because it is older than the expiration timestamp, but is one of |
| the <code>numSnapshots</code> most recent ancestors of the current state, it will be retained. This |
| will not cause snapshots explicitly identified by id from expiring. |
| <p> |
| This may keep more than <code>numSnapshots</code> ancestors if snapshots are added concurrently. This |
| may keep less than <code>numSnapshots</code> ancestors if the current table state does not have that many.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>numSnapshots</code> - the number of snapshots to retain</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>this for method chaining</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="deleteWith(java.util.function.Consumer)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>deleteWith</h4> |
| <pre class="methodSignature"><a href="ExpireSnapshots.html" title="interface in org.apache.iceberg">ExpireSnapshots</a> deleteWith​(java.util.function.Consumer<java.lang.String> deleteFunc)</pre> |
| <div class="block">Passes an alternative delete implementation that will be used for manifests and data files. |
| <p> |
| Manifest files that are no longer used by valid snapshots will be deleted. Data files that were |
| deleted by snapshots that are expired will be deleted. |
| <p> |
| If this method is not called, unnecessary manifests and data files will still be deleted.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>deleteFunc</code> - a function that will be called to delete manifests and data files</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>this for method chaining</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="executeDeleteWith(java.util.concurrent.ExecutorService)"> |
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| <h4>executeDeleteWith</h4> |
| <pre class="methodSignature"><a href="ExpireSnapshots.html" title="interface in org.apache.iceberg">ExpireSnapshots</a> executeDeleteWith​(java.util.concurrent.ExecutorService executorService)</pre> |
| <div class="block">Passes an alternative executor service that will be used for manifests and data files deletion. |
| <p> |
| Manifest files that are no longer used by valid snapshots will be deleted. Data files that were |
| deleted by snapshots that are expired will be deleted. |
| <p> |
| If this method is not called, unnecessary manifests and data files will still be deleted using a single threaded |
| executor service.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>executorService</code> - an executor service to parallelize tasks to delete manifests and data files</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>this for method chaining</dd> |
| </dl> |
| </li> |
| </ul> |
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| <!-- --> |
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| <h4>cleanExpiredFiles</h4> |
| <pre class="methodSignature"><a href="ExpireSnapshots.html" title="interface in org.apache.iceberg">ExpireSnapshots</a> cleanExpiredFiles​(boolean clean)</pre> |
| <div class="block">Allows expiration of snapshots without any cleanup of underlying manifest or data files. |
| <p> |
| Allows control in removing data and manifest files which may be more efficiently removed using |
| a distributed framework through the actions API.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>clean</code> - setting this to false will skip deleting expired manifests and files</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>this for method chaining</dd> |
| </dl> |
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