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| <h2 title="Interface BatchWriter" class="title">Interface BatchWriter</h2> |
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| <dt>All Superinterfaces:</dt> |
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| <dd><a href="../../../../../org/apache/accumulo/core/client/mock/MockBatchWriter.html" title="class in org.apache.accumulo.core.client.mock">MockBatchWriter</a></dd> |
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| <pre>public interface <span class="typeNameLabel">BatchWriter</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a></pre> |
| <div class="block">Send Mutations to a single Table in Accumulo. |
| <p> |
| When the user uses a Connector to create a BatchWriter, they specify how much memory and how many |
| threads it should use. As the user adds mutations to the batch writer, it buffers them. Once the |
| buffered mutations have used half of the user specified buffer, the mutations are dumped into the |
| background to be written by a thread pool. If the user specified memory completely fills up, then |
| writes are held. When a user calls flush, it does not return until all buffered mutations are |
| written. |
| <p> |
| In the event that an MutationsRejectedException exception is thrown by one of the methods on a |
| BatchWriter instance, the user should close the current instance and create a new instance. This |
| is a known limitation which will be addressed by ACCUMULO-2990 in the future.</div> |
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| <tr> |
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| <th class="colLast" scope="col">Method and Description</th> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/accumulo/core/client/BatchWriter.html#addMutation-org.apache.accumulo.core.data.Mutation-">addMutation</a></span>(<a href="../../../../../org/apache/accumulo/core/data/Mutation.html" title="class in org.apache.accumulo.core.data">Mutation</a> m)</code> |
| <div class="block">Queues one mutation to write.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/accumulo/core/client/BatchWriter.html#addMutations-java.lang.Iterable-">addMutations</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<a href="../../../../../org/apache/accumulo/core/data/Mutation.html" title="class in org.apache.accumulo.core.data">Mutation</a>> iterable)</code> |
| <div class="block">Queues several mutations to write.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/accumulo/core/client/BatchWriter.html#close--">close</a></span>()</code> |
| <div class="block">Flush and release any resources.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/accumulo/core/client/BatchWriter.html#flush--">flush</a></span>()</code> |
| <div class="block">Send any buffered mutations to Accumulo immediately.</div> |
| </td> |
| </tr> |
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| <a name="addMutation-org.apache.accumulo.core.data.Mutation-"> |
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| <h4>addMutation</h4> |
| <pre>void addMutation(<a href="../../../../../org/apache/accumulo/core/data/Mutation.html" title="class in org.apache.accumulo.core.data">Mutation</a> m) |
| throws <a href="../../../../../org/apache/accumulo/core/client/MutationsRejectedException.html" title="class in org.apache.accumulo.core.client">MutationsRejectedException</a></pre> |
| <div class="block">Queues one mutation to write.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>m</code> - the mutation to add</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../org/apache/accumulo/core/client/MutationsRejectedException.html" title="class in org.apache.accumulo.core.client">MutationsRejectedException</a></code> - this could be thrown because current or previous mutations failed</dd> |
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| <h4>addMutations</h4> |
| <pre>void addMutations(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<a href="../../../../../org/apache/accumulo/core/data/Mutation.html" title="class in org.apache.accumulo.core.data">Mutation</a>> iterable) |
| throws <a href="../../../../../org/apache/accumulo/core/client/MutationsRejectedException.html" title="class in org.apache.accumulo.core.client">MutationsRejectedException</a></pre> |
| <div class="block">Queues several mutations to write.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>iterable</code> - allows adding any number of mutations iteratively</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../org/apache/accumulo/core/client/MutationsRejectedException.html" title="class in org.apache.accumulo.core.client">MutationsRejectedException</a></code> - this could be thrown because current or previous mutations failed</dd> |
| </dl> |
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| <h4>flush</h4> |
| <pre>void flush() |
| throws <a href="../../../../../org/apache/accumulo/core/client/MutationsRejectedException.html" title="class in org.apache.accumulo.core.client">MutationsRejectedException</a></pre> |
| <div class="block">Send any buffered mutations to Accumulo immediately.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../org/apache/accumulo/core/client/MutationsRejectedException.html" title="class in org.apache.accumulo.core.client">MutationsRejectedException</a></code> - this could be thrown because current or previous mutations failed</dd> |
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| <h4>close</h4> |
| <pre>void close() |
| throws <a href="../../../../../org/apache/accumulo/core/client/MutationsRejectedException.html" title="class in org.apache.accumulo.core.client">MutationsRejectedException</a></pre> |
| <div class="block">Flush and release any resources.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true#close--" title="class or interface in java.lang">close</a></code> in interface <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../org/apache/accumulo/core/client/MutationsRejectedException.html" title="class in org.apache.accumulo.core.client">MutationsRejectedException</a></code> - this could be thrown because current or previous mutations failed</dd> |
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