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| <h2 title="Class SkipBadRecords" class="title">Class SkipBadRecords</h2> |
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| <ul class="inheritance"> |
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| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.mapred.SkipBadRecords</li> |
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| <pre>@InterfaceAudience.Public |
| @InterfaceStability.Stable |
| public class <span class="typeNameLabel">SkipBadRecords</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></pre> |
| <div class="block">Utility class for skip bad records functionality. It contains various |
| settings related to skipping of bad records. |
| |
| <p>Hadoop provides an optional mode of execution in which the bad records |
| are detected and skipped in further attempts. |
| |
| <p>This feature can be used when map/reduce tasks crashes deterministically on |
| certain input. This happens due to bugs in the map/reduce function. The usual |
| course would be to fix these bugs. But sometimes this is not possible; |
| perhaps the bug is in third party libraries for which the source code is |
| not available. Due to this, the task never reaches to completion even with |
| multiple attempts and complete data for that task is lost.</p> |
| |
| <p>With this feature, only a small portion of data is lost surrounding |
| the bad record, which may be acceptable for some user applications. |
| see <a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#setMapperMaxSkipRecords-org.apache.hadoop.conf.Configuration-long-"><code>setMapperMaxSkipRecords(Configuration, long)</code></a></p> |
| |
| <p>The skipping mode gets kicked off after certain no of failures |
| see <a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#setAttemptsToStartSkipping-org.apache.hadoop.conf.Configuration-int-"><code>setAttemptsToStartSkipping(Configuration, int)</code></a></p> |
| |
| <p>In the skipping mode, the map/reduce task maintains the record range which |
| is getting processed at all times. Before giving the input to the |
| map/reduce function, it sends this record range to the Task tracker. |
| If task crashes, the Task tracker knows which one was the last reported |
| range. On further attempts that range get skipped.</p></div> |
| </li> |
| </ul> |
| </div> |
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| <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 <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/mapred/SkipBadRecords.html#COUNTER_GROUP">COUNTER_GROUP</a></span></code> |
| <div class="block">Special counters which are written by the application and are |
| used by the framework for detecting bad records.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <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/mapred/SkipBadRecords.html#COUNTER_MAP_PROCESSED_RECORDS">COUNTER_MAP_PROCESSED_RECORDS</a></span></code> |
| <div class="block">Number of processed map records.</div> |
| </td> |
| </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/mapred/SkipBadRecords.html#COUNTER_REDUCE_PROCESSED_GROUPS">COUNTER_REDUCE_PROCESSED_GROUPS</a></span></code> |
| <div class="block">Number of processed reduce groups.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
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| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#SkipBadRecords--">SkipBadRecords</a></span>()</code> </td> |
| </tr> |
| </table> |
| </li> |
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| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static 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="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#getAttemptsToStartSkipping-org.apache.hadoop.conf.Configuration-">getAttemptsToStartSkipping</a></span>(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf)</code> |
| <div class="block">Get the number of Task attempts AFTER which skip mode |
| will be kicked off.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#getAutoIncrMapperProcCount-org.apache.hadoop.conf.Configuration-">getAutoIncrMapperProcCount</a></span>(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf)</code> |
| <div class="block">Get the flag which if set to true, |
| <a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#COUNTER_MAP_PROCESSED_RECORDS"><code>COUNTER_MAP_PROCESSED_RECORDS</code></a> is incremented |
| by MapRunner after invoking the map function.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#getAutoIncrReducerProcCount-org.apache.hadoop.conf.Configuration-">getAutoIncrReducerProcCount</a></span>(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf)</code> |
| <div class="block">Get the flag which if set to true, |
| <a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#COUNTER_REDUCE_PROCESSED_GROUPS"><code>COUNTER_REDUCE_PROCESSED_GROUPS</code></a> is incremented |
| by framework after invoking the reduce function.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#getMapperMaxSkipRecords-org.apache.hadoop.conf.Configuration-">getMapperMaxSkipRecords</a></span>(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf)</code> |
| <div class="block">Get the number of acceptable skip records surrounding the bad record PER |
| bad record in mapper.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>static long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#getReducerMaxSkipGroups-org.apache.hadoop.conf.Configuration-">getReducerMaxSkipGroups</a></span>(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf)</code> |
| <div class="block">Get the number of acceptable skip groups surrounding the bad group PER |
| bad group in reducer.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#getSkipOutputPath-org.apache.hadoop.conf.Configuration-">getSkipOutputPath</a></span>(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf)</code> |
| <div class="block">Get the directory to which skipped records are written.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#setAttemptsToStartSkipping-org.apache.hadoop.conf.Configuration-int-">setAttemptsToStartSkipping</a></span>(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf, |
| int attemptsToStartSkipping)</code> |
| <div class="block">Set the number of Task attempts AFTER which skip mode |
| will be kicked off.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#setAutoIncrMapperProcCount-org.apache.hadoop.conf.Configuration-boolean-">setAutoIncrMapperProcCount</a></span>(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf, |
| boolean autoIncr)</code> |
| <div class="block">Set the flag which if set to true, |
| <a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#COUNTER_MAP_PROCESSED_RECORDS"><code>COUNTER_MAP_PROCESSED_RECORDS</code></a> is incremented |
| by MapRunner after invoking the map function.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#setAutoIncrReducerProcCount-org.apache.hadoop.conf.Configuration-boolean-">setAutoIncrReducerProcCount</a></span>(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf, |
| boolean autoIncr)</code> |
| <div class="block">Set the flag which if set to true, |
| <a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#COUNTER_REDUCE_PROCESSED_GROUPS"><code>COUNTER_REDUCE_PROCESSED_GROUPS</code></a> is incremented |
| by framework after invoking the reduce function.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#setMapperMaxSkipRecords-org.apache.hadoop.conf.Configuration-long-">setMapperMaxSkipRecords</a></span>(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf, |
| long maxSkipRecs)</code> |
| <div class="block">Set the number of acceptable skip records surrounding the bad record PER |
| bad record in mapper.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#setReducerMaxSkipGroups-org.apache.hadoop.conf.Configuration-long-">setReducerMaxSkipGroups</a></span>(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf, |
| long maxSkipGrps)</code> |
| <div class="block">Set the number of acceptable skip groups surrounding the bad group PER |
| bad group in reducer.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#setSkipOutputPath-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.fs.Path-">setSkipOutputPath</a></span>(<a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a> conf, |
| <a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a> path)</code> |
| <div class="block">Set the directory to which skipped records are written.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </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="COUNTER_GROUP"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>COUNTER_GROUP</h4> |
| <pre>public static final <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> COUNTER_GROUP</pre> |
| <div class="block">Special counters which are written by the application and are |
| used by the framework for detecting bad records. For detecting bad records |
| these counters must be incremented by the application.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../constant-values.html#org.apache.hadoop.mapred.SkipBadRecords.COUNTER_GROUP">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="COUNTER_MAP_PROCESSED_RECORDS"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>COUNTER_MAP_PROCESSED_RECORDS</h4> |
| <pre>public static final <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> COUNTER_MAP_PROCESSED_RECORDS</pre> |
| <div class="block">Number of processed map records.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#getAutoIncrMapperProcCount-org.apache.hadoop.conf.Configuration-"><code>getAutoIncrMapperProcCount(Configuration)</code></a>, |
| <a href="../../../../constant-values.html#org.apache.hadoop.mapred.SkipBadRecords.COUNTER_MAP_PROCESSED_RECORDS">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="COUNTER_REDUCE_PROCESSED_GROUPS"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>COUNTER_REDUCE_PROCESSED_GROUPS</h4> |
| <pre>public static final <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> COUNTER_REDUCE_PROCESSED_GROUPS</pre> |
| <div class="block">Number of processed reduce groups.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#getAutoIncrReducerProcCount-org.apache.hadoop.conf.Configuration-"><code>getAutoIncrReducerProcCount(Configuration)</code></a>, |
| <a href="../../../../constant-values.html#org.apache.hadoop.mapred.SkipBadRecords.COUNTER_REDUCE_PROCESSED_GROUPS">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <ul class="blockList"> |
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| <!-- --> |
| </a> |
| <h3>Constructor Detail</h3> |
| <a name="SkipBadRecords--"> |
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| <h4>SkipBadRecords</h4> |
| <pre>public SkipBadRecords()</pre> |
| </li> |
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| <!-- ============ METHOD DETAIL ========== --> |
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| <h3>Method Detail</h3> |
| <a name="getAttemptsToStartSkipping-org.apache.hadoop.conf.Configuration-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getAttemptsToStartSkipping</h4> |
| <pre>public static int getAttemptsToStartSkipping(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf)</pre> |
| <div class="block">Get the number of Task attempts AFTER which skip mode |
| will be kicked off. When skip mode is kicked off, the |
| tasks reports the range of records which it will process |
| next to the TaskTracker. So that on failures, TT knows which |
| ones are possibly the bad records. On further executions, |
| those are skipped. |
| Default value is 2.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - the configuration</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>attemptsToStartSkipping no of task attempts</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setAttemptsToStartSkipping-org.apache.hadoop.conf.Configuration-int-"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>setAttemptsToStartSkipping</h4> |
| <pre>public static void setAttemptsToStartSkipping(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf, |
| int attemptsToStartSkipping)</pre> |
| <div class="block">Set the number of Task attempts AFTER which skip mode |
| will be kicked off. When skip mode is kicked off, the |
| tasks reports the range of records which it will process |
| next to the TaskTracker. So that on failures, TT knows which |
| ones are possibly the bad records. On further executions, |
| those are skipped. |
| Default value is 2.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - the configuration</dd> |
| <dd><code>attemptsToStartSkipping</code> - no of task attempts</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getAutoIncrMapperProcCount-org.apache.hadoop.conf.Configuration-"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>getAutoIncrMapperProcCount</h4> |
| <pre>public static boolean getAutoIncrMapperProcCount(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf)</pre> |
| <div class="block">Get the flag which if set to true, |
| <a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#COUNTER_MAP_PROCESSED_RECORDS"><code>COUNTER_MAP_PROCESSED_RECORDS</code></a> is incremented |
| by MapRunner after invoking the map function. This value must be set to |
| false for applications which process the records asynchronously |
| or buffer the input records. For example streaming. |
| In such cases applications should increment this counter on their own. |
| Default value is true.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - the configuration</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><code>true</code> if auto increment |
| <a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#COUNTER_MAP_PROCESSED_RECORDS"><code>COUNTER_MAP_PROCESSED_RECORDS</code></a>. |
| <code>false</code> otherwise.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setAutoIncrMapperProcCount-org.apache.hadoop.conf.Configuration-boolean-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setAutoIncrMapperProcCount</h4> |
| <pre>public static void setAutoIncrMapperProcCount(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf, |
| boolean autoIncr)</pre> |
| <div class="block">Set the flag which if set to true, |
| <a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#COUNTER_MAP_PROCESSED_RECORDS"><code>COUNTER_MAP_PROCESSED_RECORDS</code></a> is incremented |
| by MapRunner after invoking the map function. This value must be set to |
| false for applications which process the records asynchronously |
| or buffer the input records. For example streaming. |
| In such cases applications should increment this counter on their own. |
| Default value is true.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - the configuration</dd> |
| <dd><code>autoIncr</code> - whether to auto increment |
| <a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#COUNTER_MAP_PROCESSED_RECORDS"><code>COUNTER_MAP_PROCESSED_RECORDS</code></a>.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getAutoIncrReducerProcCount-org.apache.hadoop.conf.Configuration-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getAutoIncrReducerProcCount</h4> |
| <pre>public static boolean getAutoIncrReducerProcCount(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf)</pre> |
| <div class="block">Get the flag which if set to true, |
| <a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#COUNTER_REDUCE_PROCESSED_GROUPS"><code>COUNTER_REDUCE_PROCESSED_GROUPS</code></a> is incremented |
| by framework after invoking the reduce function. This value must be set to |
| false for applications which process the records asynchronously |
| or buffer the input records. For example streaming. |
| In such cases applications should increment this counter on their own. |
| Default value is true.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - the configuration</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><code>true</code> if auto increment |
| <a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#COUNTER_REDUCE_PROCESSED_GROUPS"><code>COUNTER_REDUCE_PROCESSED_GROUPS</code></a>. |
| <code>false</code> otherwise.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setAutoIncrReducerProcCount-org.apache.hadoop.conf.Configuration-boolean-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setAutoIncrReducerProcCount</h4> |
| <pre>public static void setAutoIncrReducerProcCount(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf, |
| boolean autoIncr)</pre> |
| <div class="block">Set the flag which if set to true, |
| <a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#COUNTER_REDUCE_PROCESSED_GROUPS"><code>COUNTER_REDUCE_PROCESSED_GROUPS</code></a> is incremented |
| by framework after invoking the reduce function. This value must be set to |
| false for applications which process the records asynchronously |
| or buffer the input records. For example streaming. |
| In such cases applications should increment this counter on their own. |
| Default value is true.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - the configuration</dd> |
| <dd><code>autoIncr</code> - whether to auto increment |
| <a href="../../../../org/apache/hadoop/mapred/SkipBadRecords.html#COUNTER_REDUCE_PROCESSED_GROUPS"><code>COUNTER_REDUCE_PROCESSED_GROUPS</code></a>.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getSkipOutputPath-org.apache.hadoop.conf.Configuration-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getSkipOutputPath</h4> |
| <pre>public static <a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a> getSkipOutputPath(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf)</pre> |
| <div class="block">Get the directory to which skipped records are written. By default it is |
| the sub directory of the output _logs directory. |
| User can stop writing skipped records by setting the value null.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - the configuration.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>path skip output directory. Null is returned if this is not set |
| and output directory is also not set.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setSkipOutputPath-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.fs.Path-"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>setSkipOutputPath</h4> |
| <pre>public static void setSkipOutputPath(<a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a> conf, |
| <a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a> path)</pre> |
| <div class="block">Set the directory to which skipped records are written. By default it is |
| the sub directory of the output _logs directory. |
| User can stop writing skipped records by setting the value null.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - the configuration.</dd> |
| <dd><code>path</code> - skip output directory path</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getMapperMaxSkipRecords-org.apache.hadoop.conf.Configuration-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getMapperMaxSkipRecords</h4> |
| <pre>public static long getMapperMaxSkipRecords(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf)</pre> |
| <div class="block">Get the number of acceptable skip records surrounding the bad record PER |
| bad record in mapper. The number includes the bad record as well. |
| To turn the feature of detection/skipping of bad records off, set the |
| value to 0. |
| The framework tries to narrow down the skipped range by retrying |
| until this threshold is met OR all attempts get exhausted for this task. |
| Set the value to Long.MAX_VALUE to indicate that framework need not try to |
| narrow down. Whatever records(depends on application) get skipped are |
| acceptable. |
| Default value is 0.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - the configuration</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>maxSkipRecs acceptable skip records.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setMapperMaxSkipRecords-org.apache.hadoop.conf.Configuration-long-"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>setMapperMaxSkipRecords</h4> |
| <pre>public static void setMapperMaxSkipRecords(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf, |
| long maxSkipRecs)</pre> |
| <div class="block">Set the number of acceptable skip records surrounding the bad record PER |
| bad record in mapper. The number includes the bad record as well. |
| To turn the feature of detection/skipping of bad records off, set the |
| value to 0. |
| The framework tries to narrow down the skipped range by retrying |
| until this threshold is met OR all attempts get exhausted for this task. |
| Set the value to Long.MAX_VALUE to indicate that framework need not try to |
| narrow down. Whatever records(depends on application) get skipped are |
| acceptable. |
| Default value is 0.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - the configuration</dd> |
| <dd><code>maxSkipRecs</code> - acceptable skip records.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getReducerMaxSkipGroups-org.apache.hadoop.conf.Configuration-"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>getReducerMaxSkipGroups</h4> |
| <pre>public static long getReducerMaxSkipGroups(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf)</pre> |
| <div class="block">Get the number of acceptable skip groups surrounding the bad group PER |
| bad group in reducer. The number includes the bad group as well. |
| To turn the feature of detection/skipping of bad groups off, set the |
| value to 0. |
| The framework tries to narrow down the skipped range by retrying |
| until this threshold is met OR all attempts get exhausted for this task. |
| Set the value to Long.MAX_VALUE to indicate that framework need not try to |
| narrow down. Whatever groups(depends on application) get skipped are |
| acceptable. |
| Default value is 0.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - the configuration</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>maxSkipGrps acceptable skip groups.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setReducerMaxSkipGroups-org.apache.hadoop.conf.Configuration-long-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
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| <h4>setReducerMaxSkipGroups</h4> |
| <pre>public static void setReducerMaxSkipGroups(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a> conf, |
| long maxSkipGrps)</pre> |
| <div class="block">Set the number of acceptable skip groups surrounding the bad group PER |
| bad group in reducer. The number includes the bad group as well. |
| To turn the feature of detection/skipping of bad groups off, set the |
| value to 0. |
| The framework tries to narrow down the skipped range by retrying |
| until this threshold is met OR all attempts get exhausted for this task. |
| Set the value to Long.MAX_VALUE to indicate that framework need not try to |
| narrow down. Whatever groups(depends on application) get skipped are |
| acceptable. |
| Default value is 0.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - the configuration</dd> |
| <dd><code>maxSkipGrps</code> - acceptable skip groups.</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
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