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| <div class="subTitle">org.apache.hadoop.io.erasurecode</div> |
| <h2 title="Class ECSchema" class="title">Class ECSchema</h2> |
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| <pre>@InterfaceAudience.Public |
| @InterfaceStability.Evolving |
| public final class <span class="typeNameLabel">ECSchema</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> |
| implements <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a></pre> |
| <div class="block">Erasure coding schema to housekeeper relevant information.</div> |
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| <dd><a href="../../../../../serialized-form.html#org.apache.hadoop.io.erasurecode.ECSchema">Serialized Form</a></dd> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
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| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/erasurecode/ECSchema.html#CODEC_NAME_KEY">CODEC_NAME_KEY</a></span></code> </td> |
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| <th class="colOne" scope="col">Constructor and Description</th> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/erasurecode/ECSchema.html#ECSchema-java.util.Map-">ECSchema</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>> allOptions)</code> |
| <div class="block">Constructor with schema name and provided all options.</div> |
| </td> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/erasurecode/ECSchema.html#ECSchema-java.lang.String-int-int-">ECSchema</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> codecName, |
| int numDataUnits, |
| int numParityUnits)</code> |
| <div class="block">Constructor with key parameters provided.</div> |
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| int numDataUnits, |
| int numParityUnits, |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
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| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/erasurecode/ECSchema.html#getCodecName--">getCodecName</a></span>()</code> |
| <div class="block">Get the codec name</div> |
| </td> |
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| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/erasurecode/ECSchema.html#getExtraOptions--">getExtraOptions</a></span>()</code> |
| <div class="block">Get extra options specific to a erasure code.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/erasurecode/ECSchema.html#getNumDataUnits--">getNumDataUnits</a></span>()</code> |
| <div class="block">Get required data units count in a coding group</div> |
| </td> |
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| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/erasurecode/ECSchema.html#getNumParityUnits--">getNumParityUnits</a></span>()</code> |
| <div class="block">Get required parity units count in a coding group</div> |
| </td> |
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| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
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| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/erasurecode/ECSchema.html#toString--">toString</a></span>()</code> |
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| <h4>ECSchema</h4> |
| <pre>public ECSchema(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>> allOptions)</pre> |
| <div class="block">Constructor with schema name and provided all options. Note the options may |
| contain additional information for the erasure codec to interpret further.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>allOptions</code> - all schema options</dd> |
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| <pre>public ECSchema(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> codecName, |
| int numDataUnits, |
| int numParityUnits)</pre> |
| <div class="block">Constructor with key parameters provided.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>codecName</code> - codec name</dd> |
| <dd><code>numDataUnits</code> - number of data units used in the schema</dd> |
| <dd><code>numParityUnits</code> - number os parity units used in the schema</dd> |
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| <pre>public ECSchema(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> codecName, |
| int numDataUnits, |
| int numParityUnits, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>> extraOptions)</pre> |
| <div class="block">Constructor with key parameters provided. Note the extraOptions may contain |
| additional information for the erasure codec to interpret further.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>codecName</code> - codec name</dd> |
| <dd><code>numDataUnits</code> - number of data units used in the schema</dd> |
| <dd><code>numParityUnits</code> - number os parity units used in the schema</dd> |
| <dd><code>extraOptions</code> - extra options to configure the codec</dd> |
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| <h4>getCodecName</h4> |
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| <div class="block">Get the codec name</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>codec name</dd> |
| </dl> |
| </li> |
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| <pre>public <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>> getExtraOptions()</pre> |
| <div class="block">Get extra options specific to a erasure code.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>extra options</dd> |
| </dl> |
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| <pre>public int getNumDataUnits()</pre> |
| <div class="block">Get required data units count in a coding group</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>count of data units</dd> |
| </dl> |
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| <pre>public int getNumParityUnits()</pre> |
| <div class="block">Get required parity units count in a coding group</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>count of parity units</dd> |
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| <div class="block">Make a meaningful string representation for log output.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a></code> in class <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>string representation</dd> |
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