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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.iceberg</a></div> |
| <h2 title="Class SparkDistributedDataScan" class="title">Class SparkDistributedDataScan</h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="SnapshotScan.html" title="class in org.apache.iceberg">org.apache.iceberg.SnapshotScan</a><ThisT,​T,​G></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.iceberg.SparkDistributedDataScan</li> |
| </ul> |
| </li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><code><a href="BatchScan.html" title="interface in org.apache.iceberg">BatchScan</a></code>, <code><a href="Scan.html" title="interface in org.apache.iceberg">Scan</a><<a href="BatchScan.html" title="interface in org.apache.iceberg">BatchScan</a>,​<a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​<a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><<a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>>></code></dd> |
| </dl> |
| <hr> |
| <pre>public class <span class="typeNameLabel">SparkDistributedDataScan</span> |
| extends <a href="SnapshotScan.html" title="class in org.apache.iceberg">SnapshotScan</a><ThisT,​T,​G></pre> |
| <div class="block">A batch data scan that can utilize Spark cluster resources for planning. |
| |
| <p>This scan remotely filters manifests, fetching only the relevant data and delete files to the |
| driver. The delete file assignment is done locally after the remote filtering step. Such approach |
| is beneficial if the remote parallelism is much higher than the number of driver cores. |
| |
| <p>This scan is best suited for queries with selective filters on lower/upper bounds across all |
| partitions, or against poorly clustered metadata. This allows job planning to benefit from highly |
| concurrent remote filtering while not incurring high serialization and data transfer costs. This |
| class is also useful for full table scans over large tables but the cost of bringing data and |
| delete file details to the driver may become noticeable. Make sure to follow the performance tips |
| below in such cases. |
| |
| <p>Ensure the filtered metadata size doesn't exceed the driver's max result size. For large table |
| scans, consider increasing `spark.driver.maxResultSize` to avoid job failures. |
| |
| <p>Performance tips: |
| |
| <ul> |
| <li>Enable Kryo serialization (`spark.serializer`) |
| <li>Increase the number of driver cores (`spark.driver.cores`) |
| <li>Tune the number of threads used to fetch task results (`spark.resultGetter.threads`) |
| </ul></div> |
| </li> |
| </ul> |
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| <h3>Field Summary</h3> |
| <table class="memberSummary"> |
| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Field</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected static java.util.List<java.lang.String></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#DELETE_SCAN_COLUMNS">DELETE_SCAN_COLUMNS</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected static java.util.List<java.lang.String></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#DELETE_SCAN_WITH_STATS_COLUMNS">DELETE_SCAN_WITH_STATS_COLUMNS</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected static boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#PLAN_SCANS_WITH_WORKER_POOL">PLAN_SCANS_WITH_WORKER_POOL</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected static java.util.List<java.lang.String></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#SCAN_COLUMNS">SCAN_COLUMNS</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected static java.util.List<java.lang.String></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#SCAN_WITH_STATS_COLUMNS">SCAN_WITH_STATS_COLUMNS</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
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| <tr> |
| <th class="colFirst" scope="col">Constructor</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.spark.sql.SparkSession,org.apache.iceberg.Table,org.apache.iceberg.spark.SparkReadConf)">SparkDistributedDataScan</a></span>​(org.apache.spark.sql.SparkSession spark, |
| <a href="Table.html" title="interface in org.apache.iceberg">Table</a> table, |
| <a href="spark/SparkReadConf.html" title="class in org.apache.iceberg.spark">SparkReadConf</a> readConf)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <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>ThisT</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#caseSensitive(boolean)">caseSensitive</a></span>​(boolean caseSensitive)</code></th> |
| <td class="colLast"> |
| <div class="block">Create a new scan from this that, if data columns where selected via <a href="Scan.html#select(java.util.Collection)"><code>Scan.select(java.util.Collection)</code></a>, controls whether the match to the schema will be done with case |
| sensitivity.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>protected org.apache.iceberg.TableScanContext</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#context()">context</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>protected <a href="PlanningMode.html" title="enum in org.apache.iceberg">PlanningMode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#dataPlanningMode()">dataPlanningMode</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns which planning mode to use for data.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>protected <a href="PlanningMode.html" title="enum in org.apache.iceberg">PlanningMode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#deletePlanningMode()">deletePlanningMode</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns which planning mode to use for deletes.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>protected <a href="io/CloseableIterable.html" title="interface in org.apache.iceberg.io">CloseableIterable</a><<a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#doPlanFiles()">doPlanFiles</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="expressions/Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#filter()">filter</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns this scan's filter <a href="expressions/Expression.html" title="interface in org.apache.iceberg.expressions"><code>Expression</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>ThisT</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#filter(org.apache.iceberg.expressions.Expression)">filter</a></span>​(<a href="expressions/Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a> expr)</code></th> |
| <td class="colLast"> |
| <div class="block">Create a new scan from the results of this filtered by the <a href="expressions/Expression.html" title="interface in org.apache.iceberg.expressions"><code>Expression</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>ThisT</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#ignoreResiduals()">ignoreResiduals</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Create a new scan from this that applies data filtering to files but not to rows in those |
| files.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>ThisT</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#includeColumnStats()">includeColumnStats</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Create a new scan from this that loads the column stats with each data file.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>protected <a href="io/FileIO.html" title="interface in org.apache.iceberg.io">FileIO</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#io()">io</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isCaseSensitive()">isCaseSensitive</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether this scan is case-sensitive with respect to column names.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>ThisT</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#metricsReporter(org.apache.iceberg.metrics.MetricsReporter)">metricsReporter</a></span>​(<a href="metrics/MetricsReporter.html" title="interface in org.apache.iceberg.metrics">MetricsReporter</a> reporter)</code></th> |
| <td class="colLast"> |
| <div class="block">Create a new scan that will report scan metrics to the provided reporter in addition to |
| reporters maintained by the scan.</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>protected org.apache.iceberg.ManifestGroup</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#newManifestGroup(java.util.List,boolean)">newManifestGroup</a></span>​(java.util.List<<a href="ManifestFile.html" title="interface in org.apache.iceberg">ManifestFile</a>> dataManifests, |
| boolean withColumnStats)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>protected org.apache.iceberg.ManifestGroup</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#newManifestGroup(java.util.List,java.util.List)">newManifestGroup</a></span>​(java.util.List<<a href="ManifestFile.html" title="interface in org.apache.iceberg">ManifestFile</a>> dataManifests, |
| java.util.List<<a href="ManifestFile.html" title="interface in org.apache.iceberg">ManifestFile</a>> deleteManifests)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>protected org.apache.iceberg.ManifestGroup</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#newManifestGroup(java.util.List,java.util.List,boolean)">newManifestGroup</a></span>​(java.util.List<<a href="ManifestFile.html" title="interface in org.apache.iceberg">ManifestFile</a>> dataManifests, |
| java.util.List<<a href="ManifestFile.html" title="interface in org.apache.iceberg">ManifestFile</a>> deleteManifests, |
| boolean withColumnStats)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>protected <a href="BatchScan.html" title="interface in org.apache.iceberg">BatchScan</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#newRefinedScan(org.apache.iceberg.Table,org.apache.iceberg.Schema,org.apache.iceberg.TableScanContext)">newRefinedScan</a></span>​(<a href="Table.html" title="interface in org.apache.iceberg">Table</a> newTable, |
| <a href="Schema.html" title="class in org.apache.iceberg">Schema</a> newSchema, |
| org.apache.iceberg.TableScanContext newContext)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code>ThisT</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#option(java.lang.String,java.lang.String)">option</a></span>​(java.lang.String property, |
| java.lang.String value)</code></th> |
| <td class="colLast"> |
| <div class="block">Create a new scan from this scan's configuration that will override the <a href="Table.html" title="interface in org.apache.iceberg"><code>Table</code></a>'s |
| behavior based on the incoming pair.</div> |
| </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code>protected java.util.Map<java.lang.String,​java.lang.String></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#options()">options</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i18" class="altColor"> |
| <td class="colFirst"><code>protected java.lang.Iterable<<a href="io/CloseableIterable.html" title="interface in org.apache.iceberg.io">CloseableIterable</a><<a href="DataFile.html" title="interface in org.apache.iceberg">DataFile</a>>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#planDataRemotely(java.util.List,boolean)">planDataRemotely</a></span>​(java.util.List<<a href="ManifestFile.html" title="interface in org.apache.iceberg">ManifestFile</a>> dataManifests, |
| boolean withColumnStats)</code></th> |
| <td class="colLast"> |
| <div class="block">Plans data remotely.</div> |
| </td> |
| </tr> |
| <tr id="i19" class="rowColor"> |
| <td class="colFirst"><code>protected org.apache.iceberg.DeleteFileIndex</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#planDeletesRemotely(java.util.List)">planDeletesRemotely</a></span>​(java.util.List<<a href="ManifestFile.html" title="interface in org.apache.iceberg">ManifestFile</a>> deleteManifests)</code></th> |
| <td class="colLast"> |
| <div class="block">Plans deletes remotely.</div> |
| </td> |
| </tr> |
| <tr id="i20" class="altColor"> |
| <td class="colFirst"><code>protected java.util.concurrent.ExecutorService</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#planExecutor()">planExecutor</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i21" class="rowColor"> |
| <td class="colFirst"><code><a href="io/CloseableIterable.html" title="interface in org.apache.iceberg.io">CloseableIterable</a><<a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><<a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#planTasks()">planTasks</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Plan balanced task groups for this scan by splitting large and combining small tasks.</div> |
| </td> |
| </tr> |
| <tr id="i22" class="altColor"> |
| <td class="colFirst"><code>ThisT</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#planWith(java.util.concurrent.ExecutorService)">planWith</a></span>​(java.util.concurrent.ExecutorService executorService)</code></th> |
| <td class="colLast"> |
| <div class="block">Create a new scan to use a particular executor to plan.</div> |
| </td> |
| </tr> |
| <tr id="i23" class="rowColor"> |
| <td class="colFirst"><code>ThisT</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#project(org.apache.iceberg.Schema)">project</a></span>​(<a href="Schema.html" title="class in org.apache.iceberg">Schema</a> projectedSchema)</code></th> |
| <td class="colLast"> |
| <div class="block">Create a new scan from this with the schema as its projection.</div> |
| </td> |
| </tr> |
| <tr id="i24" class="altColor"> |
| <td class="colFirst"><code>protected int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#remoteParallelism()">remoteParallelism</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the cluster parallelism.</div> |
| </td> |
| </tr> |
| <tr id="i25" class="rowColor"> |
| <td class="colFirst"><code>protected <a href="expressions/Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#residualFilter()">residualFilter</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i26" class="altColor"> |
| <td class="colFirst"><code>protected java.util.List<java.lang.String></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#scanColumns()">scanColumns</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i27" class="rowColor"> |
| <td class="colFirst"><code><a href="Schema.html" title="class in org.apache.iceberg">Schema</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#schema()">schema</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns this scan's projection <a href="Schema.html" title="class in org.apache.iceberg"><code>Schema</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i28" class="altColor"> |
| <td class="colFirst"><code>ThisT</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#select(java.util.Collection)">select</a></span>​(java.util.Collection<java.lang.String> columns)</code></th> |
| <td class="colLast"> |
| <div class="block">Create a new scan from this that will read the given data columns.</div> |
| </td> |
| </tr> |
| <tr id="i29" class="rowColor"> |
| <td class="colFirst"><code>protected boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#shouldCopyRemotelyPlannedDataFiles()">shouldCopyRemotelyPlannedDataFiles</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Controls whether defensive copies are created for remotely planned data files.</div> |
| </td> |
| </tr> |
| <tr id="i30" class="altColor"> |
| <td class="colFirst"><code>protected boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#shouldIgnoreResiduals()">shouldIgnoreResiduals</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i31" class="rowColor"> |
| <td class="colFirst"><code>protected boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#shouldPlanWithExecutor()">shouldPlanWithExecutor</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i32" class="altColor"> |
| <td class="colFirst"><code>protected boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#shouldReturnColumnStats()">shouldReturnColumnStats</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i33" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#splitLookback()">splitLookback</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the split lookback for this scan.</div> |
| </td> |
| </tr> |
| <tr id="i34" class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#splitOpenFileCost()">splitOpenFileCost</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the split open file cost for this scan.</div> |
| </td> |
| </tr> |
| <tr id="i35" class="rowColor"> |
| <td class="colFirst"><code><a href="Table.html" title="interface in org.apache.iceberg">Table</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#table()">table</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i36" class="altColor"> |
| <td class="colFirst"><code>protected <a href="Schema.html" title="class in org.apache.iceberg">Schema</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#tableSchema()">tableSchema</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i37" class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#targetSplitSize()">targetSplitSize</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the target split size for this scan.</div> |
| </td> |
| </tr> |
| <tr id="i38" class="altColor"> |
| <td class="colFirst"><code>protected boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#useSnapshotSchema()">useSnapshotSchema</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| </table> |
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| </a> |
| <h3>Methods inherited from class org.apache.iceberg.<a href="SnapshotScan.html" title="class in org.apache.iceberg">SnapshotScan</a></h3> |
| <code><a href="SnapshotScan.html#asOfTime(long)">asOfTime</a>, <a href="SnapshotScan.html#planFiles()">planFiles</a>, <a href="SnapshotScan.html#scanMetrics()">scanMetrics</a>, <a href="SnapshotScan.html#snapshot()">snapshot</a>, <a href="SnapshotScan.html#snapshotId()">snapshotId</a>, <a href="SnapshotScan.html#toString()">toString</a>, <a href="SnapshotScan.html#useRef(java.lang.String)">useRef</a>, <a href="SnapshotScan.html#useSnapshot(long)">useSnapshot</a></code></li> |
| </ul> |
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| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</code></li> |
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| </a> |
| <h3>Methods inherited from interface org.apache.iceberg.<a href="BatchScan.html" title="interface in org.apache.iceberg">BatchScan</a></h3> |
| <code><a href="BatchScan.html#asOfTime(long)">asOfTime</a>, <a href="BatchScan.html#snapshot()">snapshot</a>, <a href="BatchScan.html#table()">table</a>, <a href="BatchScan.html#useRef(java.lang.String)">useRef</a>, <a href="BatchScan.html#useSnapshot(long)">useSnapshot</a></code></li> |
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| <li class="blockList"><a id="methods.inherited.from.class.org.apache.iceberg.Scan"> |
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| </a> |
| <h3>Methods inherited from interface org.apache.iceberg.<a href="Scan.html" title="interface in org.apache.iceberg">Scan</a></h3> |
| <code><a href="Scan.html#caseSensitive(boolean)">caseSensitive</a>, <a href="Scan.html#filter()">filter</a>, <a href="Scan.html#filter(org.apache.iceberg.expressions.Expression)">filter</a>, <a href="Scan.html#ignoreResiduals()">ignoreResiduals</a>, <a href="Scan.html#includeColumnStats()">includeColumnStats</a>, <a href="Scan.html#isCaseSensitive()">isCaseSensitive</a>, <a href="Scan.html#metricsReporter(org.apache.iceberg.metrics.MetricsReporter)">metricsReporter</a>, <a href="Scan.html#option(java.lang.String,java.lang.String)">option</a>, <a href="Scan.html#planFiles()">planFiles</a>, <a href="Scan.html#planWith(java.util.concurrent.ExecutorService)">planWith</a>, <a href="Scan.html#project(org.apache.iceberg.Schema)">project</a>, <a href="Scan.html#schema()">schema</a>, <a href="Scan.html#select(java.lang.String...)">select</a>, <a href="Scan.html#select(java.util.Collection)">select</a>, <a href="Scan.html#splitLookback()">splitLookback</a>, <a href="Scan.html#splitOpenFileCost()">splitOpenFileCost</a>, <a href="Scan.html#targetSplitSize()">targetSplitSize</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
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| <!-- ============ FIELD DETAIL =========== --> |
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| <h3>Field Detail</h3> |
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| <h4>SCAN_COLUMNS</h4> |
| <pre>protected static final java.util.List<java.lang.String> SCAN_COLUMNS</pre> |
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| <h4>SCAN_WITH_STATS_COLUMNS</h4> |
| <pre>protected static final java.util.List<java.lang.String> SCAN_WITH_STATS_COLUMNS</pre> |
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| <h4>DELETE_SCAN_COLUMNS</h4> |
| <pre>protected static final java.util.List<java.lang.String> DELETE_SCAN_COLUMNS</pre> |
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| <a id="DELETE_SCAN_WITH_STATS_COLUMNS"> |
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| <ul class="blockList"> |
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| <h4>DELETE_SCAN_WITH_STATS_COLUMNS</h4> |
| <pre>protected static final java.util.List<java.lang.String> DELETE_SCAN_WITH_STATS_COLUMNS</pre> |
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| <a id="PLAN_SCANS_WITH_WORKER_POOL"> |
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| <h4>PLAN_SCANS_WITH_WORKER_POOL</h4> |
| <pre>protected static final boolean PLAN_SCANS_WITH_WORKER_POOL</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <section role="region"> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a id="<init>(org.apache.spark.sql.SparkSession,org.apache.iceberg.Table,org.apache.iceberg.spark.SparkReadConf)"> |
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| </a> |
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| <h4>SparkDistributedDataScan</h4> |
| <pre>public SparkDistributedDataScan​(org.apache.spark.sql.SparkSession spark, |
| <a href="Table.html" title="interface in org.apache.iceberg">Table</a> table, |
| <a href="spark/SparkReadConf.html" title="class in org.apache.iceberg.spark">SparkReadConf</a> readConf)</pre> |
| </li> |
| </ul> |
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| <h3>Method Detail</h3> |
| <a id="newRefinedScan(org.apache.iceberg.Table,org.apache.iceberg.Schema,org.apache.iceberg.TableScanContext)"> |
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| <h4>newRefinedScan</h4> |
| <pre class="methodSignature">protected <a href="BatchScan.html" title="interface in org.apache.iceberg">BatchScan</a> newRefinedScan​(<a href="Table.html" title="interface in org.apache.iceberg">Table</a> newTable, |
| <a href="Schema.html" title="class in org.apache.iceberg">Schema</a> newSchema, |
| org.apache.iceberg.TableScanContext newContext)</pre> |
| </li> |
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| <a id="remoteParallelism()"> |
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| <h4>remoteParallelism</h4> |
| <pre class="methodSignature">protected int remoteParallelism()</pre> |
| <div class="block">Returns the cluster parallelism. |
| |
| <p>This value indicates the maximum number of manifests that can be processed concurrently by |
| the cluster. Implementations should take into account both the currently available processing |
| slots and potential dynamic allocation, if applicable. |
| |
| <p>The remote parallelism is compared against the size of the thread pool available locally to |
| determine the feasibility of remote planning. This value is ignored if the planning mode is set |
| explicitly as local or distributed.</div> |
| </li> |
| </ul> |
| <a id="dataPlanningMode()"> |
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| <li class="blockList"> |
| <h4>dataPlanningMode</h4> |
| <pre class="methodSignature">protected <a href="PlanningMode.html" title="enum in org.apache.iceberg">PlanningMode</a> dataPlanningMode()</pre> |
| <div class="block">Returns which planning mode to use for data.</div> |
| </li> |
| </ul> |
| <a id="shouldCopyRemotelyPlannedDataFiles()"> |
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| <h4>shouldCopyRemotelyPlannedDataFiles</h4> |
| <pre class="methodSignature">protected boolean shouldCopyRemotelyPlannedDataFiles()</pre> |
| <div class="block">Controls whether defensive copies are created for remotely planned data files. |
| |
| <p>By default, this class creates defensive copies for each data file that is planned remotely, |
| assuming the provided iterable can be lazy and may reuse objects. If unnecessary and data file |
| objects can be safely added into a collection, implementations can override this behavior.</div> |
| </li> |
| </ul> |
| <a id="planDataRemotely(java.util.List,boolean)"> |
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| <h4>planDataRemotely</h4> |
| <pre class="methodSignature">protected java.lang.Iterable<<a href="io/CloseableIterable.html" title="interface in org.apache.iceberg.io">CloseableIterable</a><<a href="DataFile.html" title="interface in org.apache.iceberg">DataFile</a>>> planDataRemotely​(java.util.List<<a href="ManifestFile.html" title="interface in org.apache.iceberg">ManifestFile</a>> dataManifests, |
| boolean withColumnStats)</pre> |
| <div class="block">Plans data remotely. |
| |
| <p>Implementations are encouraged to return groups of matching data files, enabling this class |
| to process multiple groups concurrently to speed up the remaining work. This is particularly |
| useful when dealing with equality deletes, as delete index lookups with such delete files |
| require comparing bounds and typically benefit from parallelization. |
| |
| <p>If the result iterable reuses objects, <a href="#shouldCopyRemotelyPlannedDataFiles()"><code>shouldCopyRemotelyPlannedDataFiles()</code></a> must |
| return true. |
| |
| <p>The input data manifests have been already filtered to include only potential matches based |
| on the scan filter. Implementations are expected to further filter these manifests and only |
| return files that may hold data matching the scan filter.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>dataManifests</code> - data manifests that may contain files matching the scan filter</dd> |
| <dd><code>withColumnStats</code> - a flag whether to load column stats</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>groups of data files planned remotely</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>deletePlanningMode</h4> |
| <pre class="methodSignature">protected <a href="PlanningMode.html" title="enum in org.apache.iceberg">PlanningMode</a> deletePlanningMode()</pre> |
| <div class="block">Returns which planning mode to use for deletes.</div> |
| </li> |
| </ul> |
| <a id="planDeletesRemotely(java.util.List)"> |
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| <h4>planDeletesRemotely</h4> |
| <pre class="methodSignature">protected org.apache.iceberg.DeleteFileIndex planDeletesRemotely​(java.util.List<<a href="ManifestFile.html" title="interface in org.apache.iceberg">ManifestFile</a>> deleteManifests)</pre> |
| <div class="block">Plans deletes remotely. |
| |
| <p>The input delete manifests have been already filtered to include only potential matches |
| based on the scan filter. Implementations are expected to further filter these manifests and |
| return files that may hold deletes matching the scan filter.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>deleteManifests</code> - delete manifests that may contain files matching the scan filter</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a delete file index planned remotely</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="doPlanFiles()"> |
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| <h4>doPlanFiles</h4> |
| <pre class="methodSignature">protected <a href="io/CloseableIterable.html" title="interface in org.apache.iceberg.io">CloseableIterable</a><<a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>> doPlanFiles()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="SnapshotScan.html#doPlanFiles()">doPlanFiles</a></code> in class <code><a href="SnapshotScan.html" title="class in org.apache.iceberg">SnapshotScan</a><<a href="BatchScan.html" title="interface in org.apache.iceberg">BatchScan</a>,​<a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​<a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><<a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>>></code></dd> |
| </dl> |
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| </ul> |
| <a id="planTasks()"> |
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| <h4>planTasks</h4> |
| <pre class="methodSignature">public <a href="io/CloseableIterable.html" title="interface in org.apache.iceberg.io">CloseableIterable</a><<a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><<a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>>> planTasks()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scan.html#planTasks()">Scan</a></code></span></div> |
| <div class="block">Plan balanced task groups for this scan by splitting large and combining small tasks. |
| |
| <p>Task groups created by this method may read partial input files, multiple input files or |
| both.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scan.html#planTasks()">planTasks</a></code> in interface <code><a href="Scan.html" title="interface in org.apache.iceberg">Scan</a><<a href="BatchScan.html" title="interface in org.apache.iceberg">BatchScan</a>,​<a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​<a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><<a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>>></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>an Iterable of balanced task groups required by this scan</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>useSnapshotSchema</h4> |
| <pre class="methodSignature">protected boolean useSnapshotSchema()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="SnapshotScan.html#useSnapshotSchema()">useSnapshotSchema</a></code> in class <code><a href="SnapshotScan.html" title="class in org.apache.iceberg">SnapshotScan</a><ThisT,​T extends <a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​G extends <a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><T>></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="newManifestGroup(java.util.List,java.util.List)"> |
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| <h4>newManifestGroup</h4> |
| <pre class="methodSignature">protected org.apache.iceberg.ManifestGroup newManifestGroup​(java.util.List<<a href="ManifestFile.html" title="interface in org.apache.iceberg">ManifestFile</a>> dataManifests, |
| java.util.List<<a href="ManifestFile.html" title="interface in org.apache.iceberg">ManifestFile</a>> deleteManifests)</pre> |
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| <pre class="methodSignature">protected org.apache.iceberg.ManifestGroup newManifestGroup​(java.util.List<<a href="ManifestFile.html" title="interface in org.apache.iceberg">ManifestFile</a>> dataManifests, |
| boolean withColumnStats)</pre> |
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| <pre class="methodSignature">protected org.apache.iceberg.ManifestGroup newManifestGroup​(java.util.List<<a href="ManifestFile.html" title="interface in org.apache.iceberg">ManifestFile</a>> dataManifests, |
| java.util.List<<a href="ManifestFile.html" title="interface in org.apache.iceberg">ManifestFile</a>> deleteManifests, |
| boolean withColumnStats)</pre> |
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| <h4>table</h4> |
| <pre class="methodSignature">public <a href="Table.html" title="interface in org.apache.iceberg">Table</a> table()</pre> |
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| <h4>io</h4> |
| <pre class="methodSignature">protected <a href="io/FileIO.html" title="interface in org.apache.iceberg.io">FileIO</a> io()</pre> |
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| <h4>tableSchema</h4> |
| <pre class="methodSignature">protected <a href="Schema.html" title="class in org.apache.iceberg">Schema</a> tableSchema()</pre> |
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| <h4>context</h4> |
| <pre class="methodSignature">protected org.apache.iceberg.TableScanContext context()</pre> |
| </li> |
| </ul> |
| <a id="options()"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>options</h4> |
| <pre class="methodSignature">protected java.util.Map<java.lang.String,​java.lang.String> options()</pre> |
| </li> |
| </ul> |
| <a id="scanColumns()"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>scanColumns</h4> |
| <pre class="methodSignature">protected java.util.List<java.lang.String> scanColumns()</pre> |
| </li> |
| </ul> |
| <a id="shouldReturnColumnStats()"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>shouldReturnColumnStats</h4> |
| <pre class="methodSignature">protected boolean shouldReturnColumnStats()</pre> |
| </li> |
| </ul> |
| <a id="shouldIgnoreResiduals()"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>shouldIgnoreResiduals</h4> |
| <pre class="methodSignature">protected boolean shouldIgnoreResiduals()</pre> |
| </li> |
| </ul> |
| <a id="residualFilter()"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>residualFilter</h4> |
| <pre class="methodSignature">protected <a href="expressions/Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a> residualFilter()</pre> |
| </li> |
| </ul> |
| <a id="shouldPlanWithExecutor()"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>shouldPlanWithExecutor</h4> |
| <pre class="methodSignature">protected boolean shouldPlanWithExecutor()</pre> |
| </li> |
| </ul> |
| <a id="planExecutor()"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>planExecutor</h4> |
| <pre class="methodSignature">protected java.util.concurrent.ExecutorService planExecutor()</pre> |
| </li> |
| </ul> |
| <a id="option(java.lang.String,java.lang.String)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>option</h4> |
| <pre class="methodSignature">public ThisT option​(java.lang.String property, |
| java.lang.String value)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scan.html#option(java.lang.String,java.lang.String)">Scan</a></code></span></div> |
| <div class="block">Create a new scan from this scan's configuration that will override the <a href="Table.html" title="interface in org.apache.iceberg"><code>Table</code></a>'s |
| behavior based on the incoming pair. Unknown properties will be ignored.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scan.html#option(java.lang.String,java.lang.String)">option</a></code> in interface <code><a href="Scan.html" title="interface in org.apache.iceberg">Scan</a><ThisT,​T extends <a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​G extends <a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><T>></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>property</code> - name of the table property to be overridden</dd> |
| <dd><code>value</code> - value to override with</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a new scan based on this with overridden behavior</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="project(org.apache.iceberg.Schema)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>project</h4> |
| <pre class="methodSignature">public ThisT project​(<a href="Schema.html" title="class in org.apache.iceberg">Schema</a> projectedSchema)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scan.html#project(org.apache.iceberg.Schema)">Scan</a></code></span></div> |
| <div class="block">Create a new scan from this with the schema as its projection.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scan.html#project(org.apache.iceberg.Schema)">project</a></code> in interface <code><a href="Scan.html" title="interface in org.apache.iceberg">Scan</a><ThisT,​T extends <a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​G extends <a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><T>></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>projectedSchema</code> - a projection schema</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a new scan based on this with the given projection</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="caseSensitive(boolean)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>caseSensitive</h4> |
| <pre class="methodSignature">public ThisT caseSensitive​(boolean caseSensitive)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scan.html#caseSensitive(boolean)">Scan</a></code></span></div> |
| <div class="block">Create a new scan from this that, if data columns where selected via <a href="Scan.html#select(java.util.Collection)"><code>Scan.select(java.util.Collection)</code></a>, controls whether the match to the schema will be done with case |
| sensitivity. Default is true.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scan.html#caseSensitive(boolean)">caseSensitive</a></code> in interface <code><a href="Scan.html" title="interface in org.apache.iceberg">Scan</a><ThisT,​T extends <a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​G extends <a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><T>></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a new scan based on this with case sensitivity as stated</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="isCaseSensitive()"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isCaseSensitive</h4> |
| <pre class="methodSignature">public boolean isCaseSensitive()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scan.html#isCaseSensitive()">Scan</a></code></span></div> |
| <div class="block">Returns whether this scan is case-sensitive with respect to column names.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scan.html#isCaseSensitive()">isCaseSensitive</a></code> in interface <code><a href="Scan.html" title="interface in org.apache.iceberg">Scan</a><ThisT,​T extends <a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​G extends <a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><T>></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if case-sensitive, false otherwise.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="includeColumnStats()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>includeColumnStats</h4> |
| <pre class="methodSignature">public ThisT includeColumnStats()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scan.html#includeColumnStats()">Scan</a></code></span></div> |
| <div class="block">Create a new scan from this that loads the column stats with each data file. |
| |
| <p>Column stats include: value count, null value count, lower bounds, and upper bounds.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scan.html#includeColumnStats()">includeColumnStats</a></code> in interface <code><a href="Scan.html" title="interface in org.apache.iceberg">Scan</a><ThisT,​T extends <a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​G extends <a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><T>></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a new scan based on this that loads column stats.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="select(java.util.Collection)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>select</h4> |
| <pre class="methodSignature">public ThisT select​(java.util.Collection<java.lang.String> columns)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scan.html#select(java.util.Collection)">Scan</a></code></span></div> |
| <div class="block">Create a new scan from this that will read the given data columns. This produces an expected |
| schema that includes all fields that are either selected or used by this scan's filter |
| expression.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scan.html#select(java.util.Collection)">select</a></code> in interface <code><a href="Scan.html" title="interface in org.apache.iceberg">Scan</a><ThisT,​T extends <a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​G extends <a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><T>></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>columns</code> - column names from the table's schema</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a new scan based on this with the given projection columns</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="filter(org.apache.iceberg.expressions.Expression)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>filter</h4> |
| <pre class="methodSignature">public ThisT filter​(<a href="expressions/Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a> expr)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scan.html#filter(org.apache.iceberg.expressions.Expression)">Scan</a></code></span></div> |
| <div class="block">Create a new scan from the results of this filtered by the <a href="expressions/Expression.html" title="interface in org.apache.iceberg.expressions"><code>Expression</code></a>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scan.html#filter(org.apache.iceberg.expressions.Expression)">filter</a></code> in interface <code><a href="Scan.html" title="interface in org.apache.iceberg">Scan</a><ThisT,​T extends <a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​G extends <a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><T>></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>expr</code> - a filter expression</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a new scan based on this with results filtered by the expression</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="filter()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>filter</h4> |
| <pre class="methodSignature">public <a href="expressions/Expression.html" title="interface in org.apache.iceberg.expressions">Expression</a> filter()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scan.html#filter()">Scan</a></code></span></div> |
| <div class="block">Returns this scan's filter <a href="expressions/Expression.html" title="interface in org.apache.iceberg.expressions"><code>Expression</code></a>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scan.html#filter()">filter</a></code> in interface <code><a href="Scan.html" title="interface in org.apache.iceberg">Scan</a><ThisT,​T extends <a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​G extends <a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><T>></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>this scan's filter expression</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="ignoreResiduals()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>ignoreResiduals</h4> |
| <pre class="methodSignature">public ThisT ignoreResiduals()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scan.html#ignoreResiduals()">Scan</a></code></span></div> |
| <div class="block">Create a new scan from this that applies data filtering to files but not to rows in those |
| files.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scan.html#ignoreResiduals()">ignoreResiduals</a></code> in interface <code><a href="Scan.html" title="interface in org.apache.iceberg">Scan</a><ThisT,​T extends <a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​G extends <a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><T>></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a new scan based on this that does not filter rows in files.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="planWith(java.util.concurrent.ExecutorService)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>planWith</h4> |
| <pre class="methodSignature">public ThisT planWith​(java.util.concurrent.ExecutorService executorService)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scan.html#planWith(java.util.concurrent.ExecutorService)">Scan</a></code></span></div> |
| <div class="block">Create a new scan to use a particular executor to plan. The default worker pool will be used by |
| default.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scan.html#planWith(java.util.concurrent.ExecutorService)">planWith</a></code> in interface <code><a href="Scan.html" title="interface in org.apache.iceberg">Scan</a><ThisT,​T extends <a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​G extends <a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><T>></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>executorService</code> - the provided executor</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a table scan that uses the provided executor to access manifests</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="schema()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>schema</h4> |
| <pre class="methodSignature">public <a href="Schema.html" title="class in org.apache.iceberg">Schema</a> schema()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scan.html#schema()">Scan</a></code></span></div> |
| <div class="block">Returns this scan's projection <a href="Schema.html" title="class in org.apache.iceberg"><code>Schema</code></a>. |
| |
| <p>If the projection schema was set directly using <a href="Scan.html#project(org.apache.iceberg.Schema)"><code>Scan.project(Schema)</code></a>, returns that |
| schema. |
| |
| <p>If the projection schema was set by calling <a href="Scan.html#select(java.util.Collection)"><code>Scan.select(Collection)</code></a>, returns a |
| projection schema that includes the selected data fields and any fields used in the filter |
| expression.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scan.html#schema()">schema</a></code> in interface <code><a href="Scan.html" title="interface in org.apache.iceberg">Scan</a><ThisT,​T extends <a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​G extends <a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><T>></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>this scan's projection schema</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="targetSplitSize()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>targetSplitSize</h4> |
| <pre class="methodSignature">public long targetSplitSize()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scan.html#targetSplitSize()">Scan</a></code></span></div> |
| <div class="block">Returns the target split size for this scan.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scan.html#targetSplitSize()">targetSplitSize</a></code> in interface <code><a href="Scan.html" title="interface in org.apache.iceberg">Scan</a><ThisT,​T extends <a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​G extends <a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><T>></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="splitLookback()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>splitLookback</h4> |
| <pre class="methodSignature">public int splitLookback()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scan.html#splitLookback()">Scan</a></code></span></div> |
| <div class="block">Returns the split lookback for this scan.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scan.html#splitLookback()">splitLookback</a></code> in interface <code><a href="Scan.html" title="interface in org.apache.iceberg">Scan</a><ThisT,​T extends <a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​G extends <a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><T>></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="splitOpenFileCost()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>splitOpenFileCost</h4> |
| <pre class="methodSignature">public long splitOpenFileCost()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scan.html#splitOpenFileCost()">Scan</a></code></span></div> |
| <div class="block">Returns the split open file cost for this scan.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scan.html#splitOpenFileCost()">splitOpenFileCost</a></code> in interface <code><a href="Scan.html" title="interface in org.apache.iceberg">Scan</a><ThisT,​T extends <a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​G extends <a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><T>></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="metricsReporter(org.apache.iceberg.metrics.MetricsReporter)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>metricsReporter</h4> |
| <pre class="methodSignature">public ThisT metricsReporter​(<a href="metrics/MetricsReporter.html" title="interface in org.apache.iceberg.metrics">MetricsReporter</a> reporter)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scan.html#metricsReporter(org.apache.iceberg.metrics.MetricsReporter)">Scan</a></code></span></div> |
| <div class="block">Create a new scan that will report scan metrics to the provided reporter in addition to |
| reporters maintained by the scan.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scan.html#metricsReporter(org.apache.iceberg.metrics.MetricsReporter)">metricsReporter</a></code> in interface <code><a href="Scan.html" title="interface in org.apache.iceberg">Scan</a><ThisT,​T extends <a href="ScanTask.html" title="interface in org.apache.iceberg">ScanTask</a>,​G extends <a href="ScanTaskGroup.html" title="interface in org.apache.iceberg">ScanTaskGroup</a><T>></code></dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
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