org.apache.accumulo.core.client.mapreduce
Class AccumuloInputFormat

java.lang.Object
  org.apache.hadoop.mapreduce.InputFormat<K,V>
      org.apache.accumulo.core.client.mapreduce.InputFormatBase<Key,Value>
          org.apache.accumulo.core.client.mapreduce.AccumuloInputFormat

public class AccumuloInputFormat
extends InputFormatBase<Key,Value>

This class allows MapReduce jobs to use Accumulo as the source of data. This input format provides keys and values of type Key and Value to the Map() and Reduce() functions. The user must specify the following via static methods:

• AccumuloInputFormat.setInputTableInfo(job, username, password, table, auths)
• AccumuloInputFormat.setZooKeeperInstance(job, instanceName, hosts)

Other static methods are optional

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.accumulo.core.client.mapreduce.InputFormatBase

InputFormatBase.RangeInputSplit, InputFormatBase.RecordReaderBase<K,V>, InputFormatBase.RegexType

Field Summary

Fields inherited from class org.apache.accumulo.core.client.mapreduce.InputFormatBase

log

Constructor Summary

AccumuloInputFormat()

Method Summary

org.apache.hadoop.mapreduce.RecordReader<Key,Value>

createRecordReader(org.apache.hadoop.mapreduce.InputSplit split, org.apache.hadoop.mapreduce.TaskAttemptContext context)

Methods inherited from class org.apache.accumulo.core.client.mapreduce.InputFormatBase

addIterator, addIterator, disableAutoAdjustRanges, disableAutoAdjustRanges, fetchColumns, fetchColumns, getAuthorizations, getAuthorizations, getAutoAdjustRanges, getAutoAdjustRanges, getFetchedColumns, getFetchedColumns, getInstance, getInstance, getIteratorOptions, getIteratorOptions, getIterators, getIterators, getLogLevel, getLogLevel, getMaxVersions, getMaxVersions, getPassword, getPassword, getRanges, getRanges, getRegex, getSplits, getTablename, getTablename, getTabletLocator, getTabletLocator, getUsername, getUsername, isIsolated, isIsolated, isOfflineScan, setInputInfo, setInputInfo, setIsolated, setIsolated, setIterator, setIteratorOption, setLocalIterators, setLocalIterators, setLogLevel, setLogLevel, setMaxVersions, setMaxVersions, setMockInstance, setMockInstance, setRanges, setRanges, setRegex, setScanOffline, setZooKeeperInstance, setZooKeeperInstance, usesLocalIterators, usesLocalIterators, validateOptions, validateOptions

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AccumuloInputFormat

public AccumuloInputFormat()

Method Detail

createRecordReader

public org.apache.hadoop.mapreduce.RecordReader<Key,Value> createRecordReader(org.apache.hadoop.mapreduce.InputSplit split,
                                                                              org.apache.hadoop.mapreduce.TaskAttemptContext context)
                                                                       throws IOException,
                                                                              InterruptedException

Specified by:

createRecordReader in class org.apache.hadoop.mapreduce.InputFormat<Key,Value>

Throws:

IOException

InterruptedException