/** Called from the ExecutionEngine to request serialized dependencies. */
public byte[] nextDependencyAsBytes(final int dependencyId) {
final VoltTable vt = m_dependencyTracker.nextDependency(dependencyId);
if (vt != null) {
ByteBuffer buffer = vt.getDirectDataReference();
if (d)
LOG.debug(
String.format(
"Passing Dependency %d to EE [rows=%d, cols=%d, bytes=%d/%d]\n%s",
dependencyId,
vt.getRowCount(),
vt.getColumnCount(),
vt.getUnderlyingBufferSize(),
buffer.array().length,
vt.toString()));
assert (buffer.hasArray());
return (buffer.array());
}
// Note that we will hit this after retrieving all the VoltTables for the given dependencyId
// It does not mean that there were no VoltTables at all, it just means that
// we have gotten all of them
else if (d) {
LOG.warn(
String.format(
"Failed to find Dependency %d for EE [dep=%s, count=%d, ids=%s]",
dependencyId,
m_dependencyTracker.m_depsById.get(dependencyId),
m_dependencyTracker.m_depsById.size(),
m_dependencyTracker.m_depsById.keySet()));
}
return null;
}
