com.bigdata.resources
Class SplitUtility.BuildIndexSegmentSplitTask

java.lang.Object
  com.bigdata.journal.AbstractTask<T>
      com.bigdata.resources.AbstractResourceManagerTask<BuildResult>
          com.bigdata.resources.SplitUtility.BuildIndexSegmentSplitTask

All Implemented Interfaces:

ITask<BuildResult>, Callable<BuildResult>

Enclosing class:

SplitUtility

protected static class SplitUtility.BuildIndexSegmentSplitTask
extends AbstractResourceManagerTask<BuildResult>

Task used to build an IndexSegment from a restricted key-range of an index during a SplitIndexPartitionTask. This is a compacting merge since we want as much of the data for the index as possible in a single IndexSegment.

Version:

$Id: SplitUtility.java 2265 2009-10-26 12:51:06Z thompsonbry $

Author:

Bryan Thompson

Nested Class Summary

Nested classes/interfaces inherited from class com.bigdata.journal.AbstractTask

AbstractTask.DelegateTask<T>, AbstractTask.InnerReadWriteTxServiceCallable, AbstractTask.InnerWriteServiceCallable<T>, AbstractTask.ResubmitException

Field Summary

Fields inherited from class com.bigdata.resources.AbstractResourceManagerTask

DEBUG, INFO, log, resourceManager

Fields inherited from class com.bigdata.journal.AbstractTask

checkpointNanoTime, concurrencyManager, isReadWriteTx, nanoTime_assignedWorker, nanoTime_beginWork, nanoTime_finishedWork, nanoTime_submitTask, readOnly, taskCounters, timestamp, transactionManager, tx

Constructor Summary

SplitUtility.BuildIndexSegmentSplitTask(com.bigdata.resources.ViewMetadata vmd, Split split, Event parentEvent)
Builds an IndexSegment from the lastCommitTime of the old journal.

Method Summary

protected BuildResult

doTask() Note: The generated IndexSegment is on the retentionSet and MUST be removed from that set once it has been incorporated in a restart safe manner into an index partition view or once the task fails.

Methods inherited from class com.bigdata.resources.AbstractResourceManagerTask

toString

Methods inherited from class com.bigdata.journal.AbstractTask

assertResource, assertRunning, assertUnisolated, call, clearLoggingContext, dropIndex, getCommitTime, getIndex, getJournal, getOnlyResource, getResource, getResourceManager, getTaskCounters, getTaskName, getTimestamp, isResource, registerIndex, setupLoggingContext, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

SplitUtility.BuildIndexSegmentSplitTask

public SplitUtility.BuildIndexSegmentSplitTask(com.bigdata.resources.ViewMetadata vmd,
                                               Split split,
                                               Event parentEvent)

Builds an IndexSegment from the lastCommitTime of the old journal.

Parameters:

vmd -

split -

Method Detail

doTask

protected BuildResult doTask()
                      throws Exception

Note: The generated IndexSegment is on the retentionSet and MUST be removed from that set once it has been incorporated in a restart safe manner into an index partition view or once the task fails.

Specified by:

doTask in class AbstractTask<BuildResult>

Returns:

The object that will be returned by AbstractTask.call() iff the operation succeeds.

Throws:

Exception - The exception that will be thrown by AbstractTask.call() iff the operation fails.

InterruptedException - This exception SHOULD be thrown if Thread.interrupted() becomes true during execution.

See Also:

StoreManager.retentionSetAdd(java.util.UUID)