List of usage examples for org.apache.hadoop.mapred JobConf getUseNewReducer
public boolean getUseNewReducer()
From source file:org.apache.ignite.internal.processors.hadoop.GridHadoopUtils.java
License:Apache License
/** * Creates JobInfo from hadoop configuration. * * @param cfg Hadoop configuration.//from ww w . j a v a2 s. c o m * @return Job info. * @throws IgniteCheckedException If failed. */ public static GridHadoopDefaultJobInfo createJobInfo(Configuration cfg) throws IgniteCheckedException { JobConf jobConf = new JobConf(cfg); boolean hasCombiner = jobConf.get("mapred.combiner.class") != null || jobConf.get(MRJobConfig.COMBINE_CLASS_ATTR) != null; int numReduces = jobConf.getNumReduceTasks(); jobConf.setBooleanIfUnset("mapred.mapper.new-api", jobConf.get(OLD_MAP_CLASS_ATTR) == null); if (jobConf.getUseNewMapper()) { String mode = "new map API"; ensureNotSet(jobConf, "mapred.input.format.class", mode); ensureNotSet(jobConf, OLD_MAP_CLASS_ATTR, mode); if (numReduces != 0) ensureNotSet(jobConf, "mapred.partitioner.class", mode); else ensureNotSet(jobConf, "mapred.output.format.class", mode); } else { String mode = "map compatibility"; ensureNotSet(jobConf, MRJobConfig.INPUT_FORMAT_CLASS_ATTR, mode); ensureNotSet(jobConf, MRJobConfig.MAP_CLASS_ATTR, mode); if (numReduces != 0) ensureNotSet(jobConf, MRJobConfig.PARTITIONER_CLASS_ATTR, mode); else ensureNotSet(jobConf, MRJobConfig.OUTPUT_FORMAT_CLASS_ATTR, mode); } if (numReduces != 0) { jobConf.setBooleanIfUnset("mapred.reducer.new-api", jobConf.get(OLD_REDUCE_CLASS_ATTR) == null); if (jobConf.getUseNewReducer()) { String mode = "new reduce API"; ensureNotSet(jobConf, "mapred.output.format.class", mode); ensureNotSet(jobConf, OLD_REDUCE_CLASS_ATTR, mode); } else { String mode = "reduce compatibility"; ensureNotSet(jobConf, MRJobConfig.OUTPUT_FORMAT_CLASS_ATTR, mode); ensureNotSet(jobConf, MRJobConfig.REDUCE_CLASS_ATTR, mode); } } Map<String, String> props = new HashMap<>(); for (Map.Entry<String, String> entry : jobConf) props.put(entry.getKey(), entry.getValue()); return new GridHadoopDefaultJobInfo(jobConf.getJobName(), jobConf.getUser(), hasCombiner, numReduces, props); }
From source file:org.apache.ignite.internal.processors.hadoop.HadoopUtils.java
License:Apache License
/** * Creates JobInfo from hadoop configuration. * * @param cfg Hadoop configuration./* www .j a v a2s . c o m*/ * @return Job info. * @throws IgniteCheckedException If failed. */ public static HadoopDefaultJobInfo createJobInfo(Configuration cfg) throws IgniteCheckedException { JobConf jobConf = new JobConf(cfg); boolean hasCombiner = jobConf.get("mapred.combiner.class") != null || jobConf.get(MRJobConfig.COMBINE_CLASS_ATTR) != null; int numReduces = jobConf.getNumReduceTasks(); jobConf.setBooleanIfUnset("mapred.mapper.new-api", jobConf.get(OLD_MAP_CLASS_ATTR) == null); if (jobConf.getUseNewMapper()) { String mode = "new map API"; ensureNotSet(jobConf, "mapred.input.format.class", mode); ensureNotSet(jobConf, OLD_MAP_CLASS_ATTR, mode); if (numReduces != 0) ensureNotSet(jobConf, "mapred.partitioner.class", mode); else ensureNotSet(jobConf, "mapred.output.format.class", mode); } else { String mode = "map compatibility"; ensureNotSet(jobConf, MRJobConfig.INPUT_FORMAT_CLASS_ATTR, mode); ensureNotSet(jobConf, MRJobConfig.MAP_CLASS_ATTR, mode); if (numReduces != 0) ensureNotSet(jobConf, MRJobConfig.PARTITIONER_CLASS_ATTR, mode); else ensureNotSet(jobConf, MRJobConfig.OUTPUT_FORMAT_CLASS_ATTR, mode); } if (numReduces != 0) { jobConf.setBooleanIfUnset("mapred.reducer.new-api", jobConf.get(OLD_REDUCE_CLASS_ATTR) == null); if (jobConf.getUseNewReducer()) { String mode = "new reduce API"; ensureNotSet(jobConf, "mapred.output.format.class", mode); ensureNotSet(jobConf, OLD_REDUCE_CLASS_ATTR, mode); } else { String mode = "reduce compatibility"; ensureNotSet(jobConf, MRJobConfig.OUTPUT_FORMAT_CLASS_ATTR, mode); ensureNotSet(jobConf, MRJobConfig.REDUCE_CLASS_ATTR, mode); } } Map<String, String> props = new HashMap<>(); for (Map.Entry<String, String> entry : jobConf) props.put(entry.getKey(), entry.getValue()); return new HadoopDefaultJobInfo(jobConf.getJobName(), jobConf.getUser(), hasCombiner, numReduces, props); }
From source file:org.apache.ignite.internal.processors.hadoop.impl.v2.HadoopV2TaskContext.java
License:Apache License
/** * @param taskInfo Task info.// w w w. j a va2 s . co m * @param job Job. * @param jobId Job ID. * @param locNodeId Local node ID. * @param jobConfDataInput DataInput for read JobConf. */ public HadoopV2TaskContext(HadoopTaskInfo taskInfo, HadoopJobEx job, HadoopJobId jobId, @Nullable UUID locNodeId, DataInput jobConfDataInput) throws IgniteCheckedException { super(taskInfo, job); this.locNodeId = locNodeId; // Before create JobConf instance we should set new context class loader. ClassLoader oldLdr = HadoopCommonUtils.setContextClassLoader(getClass().getClassLoader()); try { JobConf jobConf = new JobConf(); try { jobConf.readFields(jobConfDataInput); } catch (IOException e) { throw new IgniteCheckedException(e); } // For map-reduce jobs prefer local writes. jobConf.setBooleanIfUnset(PARAM_IGFS_PREFER_LOCAL_WRITES, true); initializePartiallyRawComparator(jobConf); jobCtx = new JobContextImpl(jobConf, new JobID(jobId.globalId().toString(), jobId.localId())); useNewMapper = jobConf.getUseNewMapper(); useNewReducer = jobConf.getUseNewReducer(); useNewCombiner = jobConf.getCombinerClass() == null; } finally { HadoopCommonUtils.restoreContextClassLoader(oldLdr); } }
From source file:org.apache.ignite.internal.processors.hadoop.v2.GridHadoopV2TaskContext.java
License:Apache License
/** * @param taskInfo Task info.// w w w. j a v a 2s .co m * @param job Job. * @param jobId Job ID. * @param locNodeId Local node ID. * @param jobConfDataInput DataInput for read JobConf. */ public GridHadoopV2TaskContext(GridHadoopTaskInfo taskInfo, GridHadoopJob job, GridHadoopJobId jobId, @Nullable UUID locNodeId, DataInput jobConfDataInput) throws IgniteCheckedException { super(taskInfo, job); this.locNodeId = locNodeId; // Before create JobConf instance we should set new context class loader. Thread.currentThread().setContextClassLoader(getClass().getClassLoader()); try { JobConf jobConf = new JobConf(); try { jobConf.readFields(jobConfDataInput); } catch (IOException e) { throw new IgniteCheckedException(e); } // For map-reduce jobs prefer local writes. jobConf.setBooleanIfUnset(PARAM_IGFS_PREFER_LOCAL_WRITES, true); jobCtx = new JobContextImpl(jobConf, new JobID(jobId.globalId().toString(), jobId.localId())); useNewMapper = jobConf.getUseNewMapper(); useNewReducer = jobConf.getUseNewReducer(); useNewCombiner = jobConf.getCombinerClass() == null; } finally { Thread.currentThread().setContextClassLoader(null); } }
From source file:org.apache.ignite.internal.processors.hadoop.v2.HadoopV2TaskContext.java
License:Apache License
/** * @param taskInfo Task info.//from www.j a va 2s . c o m * @param job Job. * @param jobId Job ID. * @param locNodeId Local node ID. * @param jobConfDataInput DataInput for read JobConf. */ public HadoopV2TaskContext(HadoopTaskInfo taskInfo, HadoopJob job, HadoopJobId jobId, @Nullable UUID locNodeId, DataInput jobConfDataInput) throws IgniteCheckedException { super(taskInfo, job); this.locNodeId = locNodeId; // Before create JobConf instance we should set new context class loader. Thread.currentThread().setContextClassLoader(getClass().getClassLoader()); try { JobConf jobConf = new JobConf(); try { jobConf.readFields(jobConfDataInput); } catch (IOException e) { throw new IgniteCheckedException(e); } // For map-reduce jobs prefer local writes. jobConf.setBooleanIfUnset(PARAM_IGFS_PREFER_LOCAL_WRITES, true); jobCtx = new JobContextImpl(jobConf, new JobID(jobId.globalId().toString(), jobId.localId())); useNewMapper = jobConf.getUseNewMapper(); useNewReducer = jobConf.getUseNewReducer(); useNewCombiner = jobConf.getCombinerClass() == null; } finally { Thread.currentThread().setContextClassLoader(null); } }
From source file:org.gridgain.grid.kernal.processors.hadoop.GridHadoopUtils.java
License:Open Source License
/** * Creates JobInfo from hadoop configuration. * * @param cfg Hadoop configuration./*from www .jav a 2 s .c o m*/ * @return Job info. * @throws GridException If failed. */ public static GridHadoopDefaultJobInfo createJobInfo(Configuration cfg) throws GridException { JobConf jobConf = new JobConf(cfg); boolean hasCombiner = jobConf.get("mapred.combiner.class") != null || jobConf.get(MRJobConfig.COMBINE_CLASS_ATTR) != null; int numReduces = jobConf.getNumReduceTasks(); jobConf.setBooleanIfUnset("mapred.mapper.new-api", jobConf.get(OLD_MAP_CLASS_ATTR) == null); if (jobConf.getUseNewMapper()) { String mode = "new map API"; ensureNotSet(jobConf, "mapred.input.format.class", mode); ensureNotSet(jobConf, OLD_MAP_CLASS_ATTR, mode); if (numReduces != 0) ensureNotSet(jobConf, "mapred.partitioner.class", mode); else ensureNotSet(jobConf, "mapred.output.format.class", mode); } else { String mode = "map compatibility"; ensureNotSet(jobConf, MRJobConfig.INPUT_FORMAT_CLASS_ATTR, mode); ensureNotSet(jobConf, MRJobConfig.MAP_CLASS_ATTR, mode); if (numReduces != 0) ensureNotSet(jobConf, MRJobConfig.PARTITIONER_CLASS_ATTR, mode); else ensureNotSet(jobConf, MRJobConfig.OUTPUT_FORMAT_CLASS_ATTR, mode); } if (numReduces != 0) { jobConf.setBooleanIfUnset("mapred.reducer.new-api", jobConf.get(OLD_REDUCE_CLASS_ATTR) == null); if (jobConf.getUseNewReducer()) { String mode = "new reduce API"; ensureNotSet(jobConf, "mapred.output.format.class", mode); ensureNotSet(jobConf, OLD_REDUCE_CLASS_ATTR, mode); } else { String mode = "reduce compatibility"; ensureNotSet(jobConf, MRJobConfig.OUTPUT_FORMAT_CLASS_ATTR, mode); ensureNotSet(jobConf, MRJobConfig.REDUCE_CLASS_ATTR, mode); } } Map<String, String> props = new HashMap<>(); for (Map.Entry<String, String> entry : jobConf) props.put(entry.getKey(), entry.getValue()); return new GridHadoopDefaultJobInfo(jobConf.getJobName(), jobConf.getUser(), hasCombiner, numReduces, props); }
From source file:org.gridgain.grid.kernal.processors.hadoop.v2.GridHadoopV2TaskContext.java
License:Open Source License
/** * @param taskInfo Task info.//from ww w .j av a2 s . co m * @param job Job. * @param jobId Job ID. * @param locNodeId Local node ID. * @param jobConfDataInput DataInput for read JobConf. */ public GridHadoopV2TaskContext(GridHadoopTaskInfo taskInfo, GridHadoopJob job, GridHadoopJobId jobId, @Nullable UUID locNodeId, DataInput jobConfDataInput) throws GridException { super(taskInfo, job); this.locNodeId = locNodeId; // Before create JobConf instance we should set new context class loader. Thread.currentThread().setContextClassLoader(getClass().getClassLoader()); try { JobConf jobConf = new JobConf(); try { jobConf.readFields(jobConfDataInput); } catch (IOException e) { throw new GridException(e); } // For map-reduce jobs prefer local writes. jobConf.setBooleanIfUnset(PARAM_GGFS_PREFER_LOCAL_WRITES, true); jobCtx = new JobContextImpl(jobConf, new JobID(jobId.globalId().toString(), jobId.localId())); useNewMapper = jobConf.getUseNewMapper(); useNewReducer = jobConf.getUseNewReducer(); useNewCombiner = jobConf.getCombinerClass() == null; } finally { Thread.currentThread().setContextClassLoader(null); } }