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| <div class="subTitle">org.apache.kudu.client</div> |
| <h2 title="Class AsyncKuduSession" class="title">Class AsyncKuduSession</h2> |
| </div> |
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| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.kudu.client.AsyncKuduSession</li> |
| </ul> |
| </li> |
| </ul> |
| <div class="description"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <dl> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>@InterfaceAudience.Public |
| @InterfaceStability.Unstable |
| <a href="https://docs.oracle.com/javase/8/docs/api/javax/annotation/concurrent.NotThreadSafe.html?is-external=true" title="class or interface in javax.annotation">@NotThreadSafe</a> |
| public class <span class="typeNameLabel">AsyncKuduSession</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="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></pre> |
| <div class="block">An <code>AsyncKuduSession</code> belongs to a specific <a href="../../../../org/apache/kudu/client/AsyncKuduClient.html" title="class in org.apache.kudu.client"><code>AsyncKuduClient</code></a>, and represents a |
| context in which all write data access should take place. Within a session, |
| multiple operations may be accumulated and batched together for better |
| efficiency. Settings like timeouts, priorities, and trace IDs are also set |
| per session. |
| |
| <p><code>AsyncKuduSession</code> is separate from <a href="../../../../org/apache/kudu/client/AsyncKuduClient.html" title="class in org.apache.kudu.client"><code>AsyncKuduClient</code></a> because, in a multi-threaded |
| application, different threads may need to concurrently execute |
| transactions. Similar to a JDBC "session", transaction boundaries will be |
| delineated on a per-session basis -- in between a "BeginTransaction" and |
| "Commit" call on a given session, all operations will be part of the same |
| transaction. Meanwhile another concurrent session object can safely run |
| non-transactional work or other transactions without interfering. |
| |
| <p>Therefore, this class is <b>not</b> thread-safe. |
| |
| <p>Additionally, there is a guarantee that writes from different sessions do not |
| get batched together into the same RPCs -- this means that latency-sensitive |
| clients can run through the same <a href="../../../../org/apache/kudu/client/AsyncKuduClient.html" title="class in org.apache.kudu.client"><code>AsyncKuduClient</code></a> object as throughput-oriented |
| clients, perhaps by setting the latency-sensitive session's timeouts low and |
| priorities high. Without the separation of batches, a latency-sensitive |
| single-row insert might get batched along with 10MB worth of inserts from the |
| batch writer, thus delaying the response significantly. |
| |
| <p>Timeouts are handled differently depending on the flush mode. |
| With <a href="../../../../org/apache/kudu/client/SessionConfiguration.FlushMode.html#AUTO_FLUSH_SYNC"><code>AUTO_FLUSH_SYNC</code></a>, the timeout is set |
| on each <a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#apply-org.apache.kudu.client.Operation-">apply</a>()'d operation. |
| With <a href="../../../../org/apache/kudu/client/SessionConfiguration.FlushMode.html#AUTO_FLUSH_BACKGROUND"><code>AUTO_FLUSH_BACKGROUND</code></a> and |
| <a href="../../../../org/apache/kudu/client/SessionConfiguration.FlushMode.html#MANUAL_FLUSH"><code>MANUAL_FLUSH</code></a>, the timeout is assigned to a |
| whole batch of operations upon <a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#flush--">flush</a>()'ing. It means that in a situation |
| with a timeout of 500ms and a flush interval of 1000ms, an operation can be outstanding for up to |
| 1500ms before being timed out. |
| |
| <p><strong>Warning: a note on out-of-order operations</strong> |
| |
| <p>When using <code>AsyncKuduSession</code>, it is not difficult to trigger concurrent flushes on |
| the same session. The result is that operations applied in a particular order within a single |
| session may be applied in a different order on the server side, even for a single tablet. To |
| prevent this behavior, ensure that only one flush is outstanding at a given time (the maximum |
| concurrent flushes per <code>AsyncKuduSession</code> is hard-coded to 2). |
| |
| <p>If operation interleaving would be unacceptable for your application, consider using one of |
| the following strategies to avoid it: |
| |
| <ol> |
| <li>When using <a href="../../../../org/apache/kudu/client/SessionConfiguration.FlushMode.html#MANUAL_FLUSH"><code>MANUAL_FLUSH</code></a> mode, |
| wait for one <a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#flush--"><code>flush()</code></a> to <code>join()</code> before triggering another flush. |
| <li>When using <a href="../../../../org/apache/kudu/client/SessionConfiguration.FlushMode.html#AUTO_FLUSH_SYNC"><code>AUTO_FLUSH_SYNC</code></a> |
| mode, wait for each <a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#apply-org.apache.kudu.client.Operation-"><code>apply()</code></a> to <code>join()</code> before applying another operation. |
| <li>Consider not using |
| <a href="../../../../org/apache/kudu/client/SessionConfiguration.FlushMode.html#AUTO_FLUSH_BACKGROUND"><code>AUTO_FLUSH_BACKGROUND</code></a> mode. |
| <li>Make your application resilient to out-of-order application of writes. |
| <li>Avoid applying an <a href="../../../../org/apache/kudu/client/Operation.html" title="class in org.apache.kudu.client"><code>Operation</code></a> on a particular row until any previous write to that |
| row has been successfully flushed. |
| </ol> |
| |
| <p>For more information on per-session operation interleaving, see |
| <a href="https://issues.apache.org/jira/browse/KUDU-1767">KUDU-1767</a>.</div> |
| </li> |
| </ul> |
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| <h3>Nested classes/interfaces inherited from interface org.apache.kudu.client.<a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></h3> |
| <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.FlushMode.html" title="enum in org.apache.kudu.client">SessionConfiguration.FlushMode</a></code></li> |
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| <!-- =========== FIELD SUMMARY =========== --> |
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| <h3>Field Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> |
| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static org.slf4j.Logger</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#LOG">LOG</a></span></code> </td> |
| </tr> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <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><span id="t6" class="tableTab"><span><a href="javascript:show(32);">Deprecated Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>com.stumbleupon.async.Deferred<<a href="../../../../org/apache/kudu/client/OperationResponse.html" title="class in org.apache.kudu.client">OperationResponse</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#apply-org.apache.kudu.client.Operation-">apply</a></span>(<a href="../../../../org/apache/kudu/client/Operation.html" title="class in org.apache.kudu.client">Operation</a> operation)</code> |
| <div class="block">Apply the given operation.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>com.stumbleupon.async.Deferred<<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../org/apache/kudu/client/OperationResponse.html" title="class in org.apache.kudu.client">OperationResponse</a>>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#close--">close</a></span>()</code> |
| <div class="block">Flushes the buffered operations and marks this session as closed.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#countPendingErrors--">countPendingErrors</a></span>()</code> |
| <div class="block">Return the number of errors which are pending.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>com.stumbleupon.async.Deferred<<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../org/apache/kudu/client/OperationResponse.html" title="class in org.apache.kudu.client">OperationResponse</a>>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#flush--">flush</a></span>()</code> |
| <div class="block">Flush buffered writes.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/kudu/client/SessionConfiguration.FlushMode.html" title="enum in org.apache.kudu.client">SessionConfiguration.FlushMode</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#getFlushMode--">getFlushMode</a></span>()</code> |
| <div class="block">Get the current flush mode.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/kudu/client/RowErrorsAndOverflowStatus.html" title="class in org.apache.kudu.client">RowErrorsAndOverflowStatus</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#getPendingErrors--">getPendingErrors</a></span>()</code> |
| <div class="block">Return any errors from previous calls.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#getTimeoutMillis--">getTimeoutMillis</a></span>()</code> |
| <div class="block">Get the current timeout.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#hasPendingOperations--">hasPendingOperations</a></span>()</code> |
| <div class="block">Check if there are operations that haven't been completely applied.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#isClosed--">isClosed</a></span>()</code> |
| <div class="block">Returns true if this session has already been closed.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#isIgnoreAllDuplicateRows--">isIgnoreAllDuplicateRows</a></span>()</code> |
| <div class="block">Tells if the session is currently ignoring row errors when the whole list returned by a tablet |
| server is of the AlreadyPresent type.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#isIgnoreAllNotFoundRows--">isIgnoreAllNotFoundRows</a></span>()</code> |
| <div class="block">Tells if the session is currently ignoring row errors when the whole list returned by a tablet |
| server is of the NotFound type.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#setExternalConsistencyMode-org.apache.kudu.client.ExternalConsistencyMode-">setExternalConsistencyMode</a></span>(<a href="../../../../org/apache/kudu/client/ExternalConsistencyMode.html" title="enum in org.apache.kudu.client">ExternalConsistencyMode</a> consistencyMode)</code> |
| <div class="block">Set the new external consistency mode for this session.</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#setFlushInterval-int-">setFlushInterval</a></span>(int flushIntervalMillis)</code> |
| <div class="block">Set the flush interval, which will be used for the next scheduling decision.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#setFlushMode-org.apache.kudu.client.SessionConfiguration.FlushMode-">setFlushMode</a></span>(<a href="../../../../org/apache/kudu/client/SessionConfiguration.FlushMode.html" title="enum in org.apache.kudu.client">SessionConfiguration.FlushMode</a> flushMode)</code> |
| <div class="block">Set the new flush mode for this session.</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#setIgnoreAllDuplicateRows-boolean-">setIgnoreAllDuplicateRows</a></span>(boolean ignoreAllDuplicateRows)</code> |
| <div class="block">Configures the option to ignore all the row errors if they are all of the AlreadyPresent type.</div> |
| </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#setIgnoreAllNotFoundRows-boolean-">setIgnoreAllNotFoundRows</a></span>(boolean ignoreAllNotFoundRows)</code> |
| <div class="block">Configures the option to ignore all the row errors if they are all of the NotFound type.</div> |
| </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#setMutationBufferLowWatermark-float-">setMutationBufferLowWatermark</a></span>(float mutationBufferLowWatermarkPercentage)</code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#setMutationBufferSpace-int-">setMutationBufferSpace</a></span>(int numOps)</code> |
| <div class="block">Set the number of operations that can be buffered.</div> |
| </td> |
| </tr> |
| <tr id="i18" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#setTimeoutMillis-long-">setTimeoutMillis</a></span>(long timeout)</code> |
| <div class="block">Sets the timeout for the next applied operations.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
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| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.<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></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <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>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ FIELD DETAIL =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="field.detail"> |
| <!-- --> |
| </a> |
| <h3>Field Detail</h3> |
| <a name="LOG"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>LOG</h4> |
| <pre>public static final org.slf4j.Logger LOG</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a name="getFlushMode--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getFlushMode</h4> |
| <pre>public <a href="../../../../org/apache/kudu/client/SessionConfiguration.FlushMode.html" title="enum in org.apache.kudu.client">SessionConfiguration.FlushMode</a> getFlushMode()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#getFlushMode--">SessionConfiguration</a></code></span></div> |
| <div class="block">Get the current flush mode.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#getFlushMode--">getFlushMode</a></code> in interface <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>flush mode, <a href="../../../../org/apache/kudu/client/SessionConfiguration.FlushMode.html#AUTO_FLUSH_SYNC"><code>AUTO_FLUSH_SYNC</code></a> by default</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setFlushMode-org.apache.kudu.client.SessionConfiguration.FlushMode-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setFlushMode</h4> |
| <pre>public void setFlushMode(<a href="../../../../org/apache/kudu/client/SessionConfiguration.FlushMode.html" title="enum in org.apache.kudu.client">SessionConfiguration.FlushMode</a> flushMode)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#setFlushMode-org.apache.kudu.client.SessionConfiguration.FlushMode-">SessionConfiguration</a></code></span></div> |
| <div class="block">Set the new flush mode for this session.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#setFlushMode-org.apache.kudu.client.SessionConfiguration.FlushMode-">setFlushMode</a></code> in interface <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>flushMode</code> - new flush mode, can be the same as the previous one.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setExternalConsistencyMode-org.apache.kudu.client.ExternalConsistencyMode-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setExternalConsistencyMode</h4> |
| <pre>public void setExternalConsistencyMode(<a href="../../../../org/apache/kudu/client/ExternalConsistencyMode.html" title="enum in org.apache.kudu.client">ExternalConsistencyMode</a> consistencyMode)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#setExternalConsistencyMode-org.apache.kudu.client.ExternalConsistencyMode-">SessionConfiguration</a></code></span></div> |
| <div class="block">Set the new external consistency mode for this session.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#setExternalConsistencyMode-org.apache.kudu.client.ExternalConsistencyMode-">setExternalConsistencyMode</a></code> in interface <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>consistencyMode</code> - new external consistency mode, can the same as the previous one.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setMutationBufferSpace-int-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setMutationBufferSpace</h4> |
| <pre>public void setMutationBufferSpace(int numOps)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#setMutationBufferSpace-int-">SessionConfiguration</a></code></span></div> |
| <div class="block">Set the number of operations that can be buffered.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#setMutationBufferSpace-int-">setMutationBufferSpace</a></code> in interface <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>numOps</code> - number of ops.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setMutationBufferLowWatermark-float-"> |
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| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setMutationBufferLowWatermark</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a> |
| public void setMutationBufferLowWatermark(float mutationBufferLowWatermarkPercentage)</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#setMutationBufferLowWatermark-float-">SessionConfiguration</a></code></span></div> |
| <div class="block">Set the low watermark for this session. The default is set to half the mutation buffer space. |
| For example, a buffer space of 1000 with a low watermark set to 50% (0.5) will start randomly |
| sending PleaseRetryExceptions once there's an outstanding flush and the buffer is over 500. |
| As the buffer gets fuller, it becomes likelier to hit the exception.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#setMutationBufferLowWatermark-float-">setMutationBufferLowWatermark</a></code> in interface <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>mutationBufferLowWatermarkPercentage</code> - a new low watermark as a percentage, |
| has to be between 0 and 1 (inclusive). A value of 1 disables |
| the low watermark since it's the same as the high one</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setFlushInterval-int-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setFlushInterval</h4> |
| <pre>public void setFlushInterval(int flushIntervalMillis)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#setFlushInterval-int-">SessionConfiguration</a></code></span></div> |
| <div class="block">Set the flush interval, which will be used for the next scheduling decision.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#setFlushInterval-int-">setFlushInterval</a></code> in interface <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>flushIntervalMillis</code> - interval in milliseconds.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setTimeoutMillis-long-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setTimeoutMillis</h4> |
| <pre>public void setTimeoutMillis(long timeout)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#setTimeoutMillis-long-">SessionConfiguration</a></code></span></div> |
| <div class="block">Sets the timeout for the next applied operations. |
| The default timeout is 0, which disables the timeout functionality.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#setTimeoutMillis-long-">setTimeoutMillis</a></code> in interface <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>timeout</code> - Timeout in milliseconds.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getTimeoutMillis--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getTimeoutMillis</h4> |
| <pre>public long getTimeoutMillis()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#getTimeoutMillis--">SessionConfiguration</a></code></span></div> |
| <div class="block">Get the current timeout.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#getTimeoutMillis--">getTimeoutMillis</a></code> in interface <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>operation timeout in milliseconds, 0 if none was configured.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="isClosed--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isClosed</h4> |
| <pre>public boolean isClosed()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#isClosed--">SessionConfiguration</a></code></span></div> |
| <div class="block">Returns true if this session has already been closed.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#isClosed--">isClosed</a></code> in interface <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="isIgnoreAllDuplicateRows--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isIgnoreAllDuplicateRows</h4> |
| <pre>public boolean isIgnoreAllDuplicateRows()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#isIgnoreAllDuplicateRows--">SessionConfiguration</a></code></span></div> |
| <div class="block">Tells if the session is currently ignoring row errors when the whole list returned by a tablet |
| server is of the AlreadyPresent type.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#isIgnoreAllDuplicateRows--">isIgnoreAllDuplicateRows</a></code> in interface <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the session is enforcing this, else false</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setIgnoreAllDuplicateRows-boolean-"> |
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| <h4>setIgnoreAllDuplicateRows</h4> |
| <pre>public void setIgnoreAllDuplicateRows(boolean ignoreAllDuplicateRows)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#setIgnoreAllDuplicateRows-boolean-">SessionConfiguration</a></code></span></div> |
| <div class="block">Configures the option to ignore all the row errors if they are all of the AlreadyPresent type. |
| This can be useful when it is possible for INSERT operations to be retried and fail. |
| The effect of enabling this is that operation responses that match this pattern will be |
| cleared of their row errors, meaning that we consider them successful. |
| |
| TODO(KUDU-1563): Implement server side ignore capabilities to improve performance and |
| reliability of INSERT ignore operations. |
| |
| <p>Disabled by default.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#setIgnoreAllDuplicateRows-boolean-">setIgnoreAllDuplicateRows</a></code> in interface <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>ignoreAllDuplicateRows</code> - true if this session should enforce this, else false</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="isIgnoreAllNotFoundRows--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isIgnoreAllNotFoundRows</h4> |
| <pre>public boolean isIgnoreAllNotFoundRows()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#isIgnoreAllNotFoundRows--">SessionConfiguration</a></code></span></div> |
| <div class="block">Tells if the session is currently ignoring row errors when the whole list returned by a tablet |
| server is of the NotFound type.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#isIgnoreAllNotFoundRows--">isIgnoreAllNotFoundRows</a></code> in interface <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the session is enforcing this, else false</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setIgnoreAllNotFoundRows-boolean-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setIgnoreAllNotFoundRows</h4> |
| <pre>public void setIgnoreAllNotFoundRows(boolean ignoreAllNotFoundRows)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#setIgnoreAllNotFoundRows-boolean-">SessionConfiguration</a></code></span></div> |
| <div class="block">Configures the option to ignore all the row errors if they are all of the NotFound type. |
| This can be useful when it is possible for DELETE operations to be retried and fail. |
| The effect of enabling this is that operation responses that match this pattern will be |
| cleared of their row errors, meaning that we consider them successful. |
| |
| TODO(KUDU-1563): Implement server side ignore capabilities to improve performance and |
| reliability of DELETE ignore operations. |
| |
| <p>Disabled by default.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#setIgnoreAllNotFoundRows-boolean-">setIgnoreAllNotFoundRows</a></code> in interface <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>ignoreAllNotFoundRows</code> - true if this session should enforce this, else false</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="countPendingErrors--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>countPendingErrors</h4> |
| <pre>public int countPendingErrors()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#countPendingErrors--">SessionConfiguration</a></code></span></div> |
| <div class="block">Return the number of errors which are pending. Errors may accumulate when |
| using <a href="../../../../org/apache/kudu/client/SessionConfiguration.FlushMode.html#AUTO_FLUSH_BACKGROUND"><code>AUTO_FLUSH_BACKGROUND</code></a> mode.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#countPendingErrors--">countPendingErrors</a></code> in interface <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a count of errors</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getPendingErrors--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getPendingErrors</h4> |
| <pre>public <a href="../../../../org/apache/kudu/client/RowErrorsAndOverflowStatus.html" title="class in org.apache.kudu.client">RowErrorsAndOverflowStatus</a> getPendingErrors()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#getPendingErrors--">SessionConfiguration</a></code></span></div> |
| <div class="block">Return any errors from previous calls. If there were more errors |
| than could be held in the session's error storage, the overflow state is set to true. |
| |
| <p>Clears the pending errors.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#getPendingErrors--">getPendingErrors</a></code> in interface <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>an object that contains the errors and the overflow status</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="close--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>close</h4> |
| <pre>public com.stumbleupon.async.Deferred<<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../org/apache/kudu/client/OperationResponse.html" title="class in org.apache.kudu.client">OperationResponse</a>>> close()</pre> |
| <div class="block">Flushes the buffered operations and marks this session as closed. |
| See the javadoc on <a href="../../../../org/apache/kudu/client/AsyncKuduSession.html#flush--"><code>flush()</code></a> on how to deal with exceptions coming out of this method.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a Deferred whose callback chain will be invoked when. |
| everything that was buffered at the time of the call has been flushed.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="flush--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>flush</h4> |
| <pre>public com.stumbleupon.async.Deferred<<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../org/apache/kudu/client/OperationResponse.html" title="class in org.apache.kudu.client">OperationResponse</a>>> flush()</pre> |
| <div class="block">Flush buffered writes.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a <code>Deferred</code> whose callback chain will be invoked when all applied operations at |
| the time of the call have been flushed.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="hasPendingOperations--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>hasPendingOperations</h4> |
| <pre>public boolean hasPendingOperations()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#hasPendingOperations--">SessionConfiguration</a></code></span></div> |
| <div class="block">Check if there are operations that haven't been completely applied.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html#hasPendingOperations--">hasPendingOperations</a></code> in interface <code><a href="../../../../org/apache/kudu/client/SessionConfiguration.html" title="interface in org.apache.kudu.client">SessionConfiguration</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if operations are pending, else false.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="apply-org.apache.kudu.client.Operation-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>apply</h4> |
| <pre>public com.stumbleupon.async.Deferred<<a href="../../../../org/apache/kudu/client/OperationResponse.html" title="class in org.apache.kudu.client">OperationResponse</a>> apply(<a href="../../../../org/apache/kudu/client/Operation.html" title="class in org.apache.kudu.client">Operation</a> operation) |
| throws <a href="../../../../org/apache/kudu/client/KuduException.html" title="class in org.apache.kudu.client">KuduException</a></pre> |
| <div class="block">Apply the given operation. |
| <p> |
| The behavior of this method depends on the configured |
| <a href="../../../../org/apache/kudu/client/SessionConfiguration.FlushMode.html" title="enum in org.apache.kudu.client"><code>FlushMode</code></a>. Regardless |
| of flush mode, however, <code>apply()</code> may begin to perform processing in the background |
| for the call (e.g looking up the tablet location, etc).</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>operation</code> - operation to apply</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a Deferred to track this operation</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../org/apache/kudu/client/KuduException.html" title="class in org.apache.kudu.client">KuduException</a></code> - if an error happens or <a href="../../../../org/apache/kudu/client/PleaseThrottleException.html" title="class in org.apache.kudu.client"><code>PleaseThrottleException</code></a> is triggered</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../org/apache/kudu/client/SessionConfiguration.FlushMode.html" title="enum in org.apache.kudu.client"><code>FlushMode</code></a></dd> |
| </dl> |
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