Package org.apache.accumulo.test

Class BatchWriterIterator

java.lang.Object

org.apache.accumulo.core.iterators.WrappingIterator

org.apache.accumulo.test.BatchWriterIterator

All Implemented Interfaces:

SortedKeyValueIterator<Key,Value>, YieldingKeyValueIterator<Key,Value>

public class BatchWriterIterator
extends WrappingIterator

Iterator that opens a BatchWriter and writes to another table.

For each entry passed to this iterator, this writes a certain number of entries with the same key to another table and passes the entry downstream of this iterator with its value replaced by either ""success"" or a description of what failed. Success counts as all entries writing to the result table within a timeout period. Failure counts as one of the entries taking longer than the timeout period.

Configure this iterator by calling the static iteratorSetting(int, int, long, long, int, java.lang.String, org.apache.accumulo.core.client.AccumuloClient, org.apache.accumulo.core.client.security.tokens.AuthenticationToken, boolean, boolean) method.

Field Summary

Fields

Modifier and Type	Field	Description
static String	AUTHENTICATION_TOKEN
static String	AUTHENTICATION_TOKEN_CLASS
static String	INSTANCENAME
static String	OPT_batchWriterMaxMemory
static String	OPT_batchWriterTimeout
static String	OPT_clearCacheAfterFirstWrite
static String	OPT_numEntriesToWritePerEntry
static String	OPT_sleepAfterFirstWrite
static String	OPT_splitAfterFirstWrite
static String	SUCCESS_STRING
static Value	SUCCESS_VALUE
static String	TABLENAME
static String	USERNAME
static String	ZOOKEEPERHOST
static String	ZOOKEEPERTIMEOUT

Constructor Summary

Constructors

Constructor	Description
BatchWriterIterator()

Method Summary

Modifier and Type	Method	Description
SortedKeyValueIterator<Key,Value>	deepCopy(IteratorEnvironment env)
protected void	finalize()
Value	getTopValue()
void	init(SortedKeyValueIterator<Key,Value> source, Map<String,String> options, IteratorEnvironment env)
static IteratorSetting	iteratorSetting(int priority, int sleepAfterFirstWrite, long batchWriterTimeout, long batchWriterMaxMemory, int numEntriesToWrite, String tableName, String zookeeperHost, String instanceName, int zookeeperTimeout, String username, AuthenticationToken token, boolean clearCacheAfterFirstWrite, boolean splitAfterFirstWrite)
static IteratorSetting	iteratorSetting(int priority, int sleepAfterFirstWrite, long batchWriterTimeout, long batchWriterMaxMemory, int numEntriesToWrite, String tableName, AccumuloClient accumuloClient, AuthenticationToken token, boolean clearCacheAfterFirstWrite, boolean splitAfterFirstWrite)
void	next()
void	seek(Range range, Collection<ByteSequence> columnFamilies, boolean inclusive)

Methods inherited from class org.apache.accumulo.core.iterators.WrappingIterator

getSource, getTopKey, hasTop, setSource

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.accumulo.core.iterators.YieldingKeyValueIterator

enableYielding

Field Detail

OPT_sleepAfterFirstWrite

public static final String OPT_sleepAfterFirstWrite

See Also:

Constant Field Values

OPT_numEntriesToWritePerEntry

public static final String OPT_numEntriesToWritePerEntry

See Also:

Constant Field Values

OPT_batchWriterTimeout

public static final String OPT_batchWriterTimeout

See Also:

Constant Field Values

OPT_batchWriterMaxMemory

public static final String OPT_batchWriterMaxMemory

See Also:

Constant Field Values

OPT_clearCacheAfterFirstWrite

public static final String OPT_clearCacheAfterFirstWrite

See Also:

Constant Field Values

OPT_splitAfterFirstWrite

public static final String OPT_splitAfterFirstWrite

See Also:

Constant Field Values

ZOOKEEPERHOST

public static final String ZOOKEEPERHOST

See Also:

Constant Field Values

INSTANCENAME

public static final String INSTANCENAME

See Also:

Constant Field Values

TABLENAME

public static final String TABLENAME

See Also:

Constant Field Values

USERNAME

public static final String USERNAME

See Also:

Constant Field Values

ZOOKEEPERTIMEOUT

public static final String ZOOKEEPERTIMEOUT

See Also:

Constant Field Values

AUTHENTICATION_TOKEN

public static final String AUTHENTICATION_TOKEN

See Also:

Constant Field Values

AUTHENTICATION_TOKEN_CLASS

public static final String AUTHENTICATION_TOKEN_CLASS

See Also:

Constant Field Values

SUCCESS_STRING

public static final String SUCCESS_STRING

See Also:

Constant Field Values

SUCCESS_VALUE

public static final Value SUCCESS_VALUE

Constructor Detail

BatchWriterIterator

public BatchWriterIterator()

Method Detail

iteratorSetting

public static IteratorSetting iteratorSetting(int priority,
                                              int sleepAfterFirstWrite,
                                              long batchWriterTimeout,
                                              long batchWriterMaxMemory,
                                              int numEntriesToWrite,
                                              String tableName,
                                              AccumuloClient accumuloClient,
                                              AuthenticationToken token,
                                              boolean clearCacheAfterFirstWrite,
                                              boolean splitAfterFirstWrite)

iteratorSetting

public static IteratorSetting iteratorSetting(int priority,
                                              int sleepAfterFirstWrite,
                                              long batchWriterTimeout,
                                              long batchWriterMaxMemory,
                                              int numEntriesToWrite,
                                              String tableName,
                                              String zookeeperHost,
                                              String instanceName,
                                              int zookeeperTimeout,
                                              String username,
                                              AuthenticationToken token,
                                              boolean clearCacheAfterFirstWrite,
                                              boolean splitAfterFirstWrite)

init

public void init(SortedKeyValueIterator<Key,Value> source,
                 Map<String,String> options,
                 IteratorEnvironment env)
          throws IOException

Specified by:

init in interface SortedKeyValueIterator<Key,Value>

Overrides:

init in class WrappingIterator

Throws:

IOException

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Object

Throws:

Throwable

next

public void next()
          throws IOException

Specified by:

next in interface SortedKeyValueIterator<Key,Value>

Overrides:

next in class WrappingIterator

Throws:

IOException

seek

public void seek(Range range,
                 Collection<ByteSequence> columnFamilies,
                 boolean inclusive)
          throws IOException

Specified by:

seek in interface SortedKeyValueIterator<Key,Value>

Overrides:

seek in class WrappingIterator

Throws:

IOException

getTopValue

public Value getTopValue()

Specified by:

getTopValue in interface SortedKeyValueIterator<Key,Value>

Overrides:

getTopValue in class WrappingIterator

deepCopy

public SortedKeyValueIterator<Key,Value> deepCopy(IteratorEnvironment env)

Specified by:

deepCopy in interface SortedKeyValueIterator<Key,Value>

Overrides:

deepCopy in class WrappingIterator