}
}
public synchronized void initialize() {
LOG.trace("Begin submission engine manager initialization");
MapContext context = SqoopConfiguration.getInstance().getContext();
// Let's load configured submission engine
String submissionEngineClassName =
context.getString(FrameworkConstants.SYSCFG_SUBMISSION_ENGINE);
submissionEngine = (SubmissionEngine) ClassUtils
.instantiate(submissionEngineClassName);
if (submissionEngine == null) {
throw new SqoopException(FrameworkError.FRAMEWORK_0001,
submissionEngineClassName);
}
submissionEngine.initialize(context,
FrameworkConstants.PREFIX_SUBMISSION_ENGINE_CONFIG);
// Execution engine
String executionEngineClassName =
context.getString(FrameworkConstants.SYSCFG_EXECUTION_ENGINE);
executionEngine = (ExecutionEngine) ClassUtils
.instantiate(executionEngineClassName);
if (executionEngine == null) {
throw new SqoopException(FrameworkError.FRAMEWORK_0007,
executionEngineClassName);
}
// We need to make sure that user has configured compatible combination of
// submission engine and execution engine
if (!submissionEngine
.isExecutionEngineSupported(executionEngine.getClass())) {
throw new SqoopException(FrameworkError.FRAMEWORK_0008);
}
executionEngine.initialize(context,
FrameworkConstants.PREFIX_EXECUTION_ENGINE_CONFIG);
// Set up worker threads
purgeThreshold = context.getLong(
FrameworkConstants.SYSCFG_SUBMISSION_PURGE_THRESHOLD,
DEFAULT_PURGE_THRESHOLD
);
purgeSleep = context.getLong(
FrameworkConstants.SYSCFG_SUBMISSION_PURGE_SLEEP,
DEFAULT_PURGE_SLEEP
);
purgeThread = new PurgeThread();
purgeThread.start();
updateSleep = context.getLong(
FrameworkConstants.SYSCFG_SUBMISSION_UPDATE_SLEEP,
DEFAULT_UPDATE_SLEEP
);
updateThread = new UpdateThread();