use of org.apache.gobblin.hive.HiveRegisterStep in project incubator-gobblin by apache.
the class HivePartitionFileSet method generateCopyEntities.
@Override
protected Collection<CopyEntity> generateCopyEntities() throws IOException {
try (Closer closer = Closer.create()) {
MultiTimingEvent multiTimer = closer.register(new MultiTimingEvent(this.eventSubmitter, "PartitionCopy", true));
int stepPriority = 0;
String fileSet = HiveCopyEntityHelper.gson.toJson(this.partition.getValues());
List<CopyEntity> copyEntities = Lists.newArrayList();
stepPriority = hiveCopyEntityHelper.addSharedSteps(copyEntities, fileSet, stepPriority);
multiTimer.nextStage(HiveCopyEntityHelper.Stages.COMPUTE_TARGETS);
Path targetPath = hiveCopyEntityHelper.getTargetLocation(hiveCopyEntityHelper.getDataset().fs, hiveCopyEntityHelper.getTargetFs(), this.partition.getDataLocation(), Optional.of(this.partition));
Partition targetPartition = getTargetPartition(this.partition, targetPath);
multiTimer.nextStage(HiveCopyEntityHelper.Stages.EXISTING_PARTITION);
if (this.existingTargetPartition.isPresent()) {
hiveCopyEntityHelper.getTargetPartitions().remove(this.partition.getValues());
try {
checkPartitionCompatibility(targetPartition, this.existingTargetPartition.get());
} catch (IOException ioe) {
if (hiveCopyEntityHelper.getExistingEntityPolicy() != HiveCopyEntityHelper.ExistingEntityPolicy.REPLACE_PARTITIONS && hiveCopyEntityHelper.getExistingEntityPolicy() != HiveCopyEntityHelper.ExistingEntityPolicy.REPLACE_TABLE_AND_PARTITIONS) {
log.error("Source and target partitions are not compatible. Aborting copy of partition " + this.partition, ioe);
return Lists.newArrayList();
}
log.warn("Source and target partitions are not compatible. Will override target partition: " + ioe.getMessage());
log.debug("Incompatibility details: ", ioe);
stepPriority = hiveCopyEntityHelper.addPartitionDeregisterSteps(copyEntities, fileSet, stepPriority, hiveCopyEntityHelper.getTargetTable(), this.existingTargetPartition.get());
this.existingTargetPartition = Optional.absent();
}
}
multiTimer.nextStage(HiveCopyEntityHelper.Stages.PARTITION_SKIP_PREDICATE);
if (hiveCopyEntityHelper.getFastPartitionSkip().isPresent() && hiveCopyEntityHelper.getFastPartitionSkip().get().apply(this)) {
log.info(String.format("Skipping copy of partition %s due to fast partition skip predicate.", this.partition.getCompleteName()));
return Lists.newArrayList();
}
HiveSpec partitionHiveSpec = new SimpleHiveSpec.Builder<>(targetPath).withTable(HiveMetaStoreUtils.getHiveTable(hiveCopyEntityHelper.getTargetTable().getTTable())).withPartition(Optional.of(HiveMetaStoreUtils.getHivePartition(targetPartition.getTPartition()))).build();
HiveRegisterStep register = new HiveRegisterStep(hiveCopyEntityHelper.getTargetURI(), partitionHiveSpec, hiveCopyEntityHelper.getHiveRegProps());
copyEntities.add(new PostPublishStep(fileSet, Maps.<String, String>newHashMap(), register, stepPriority++));
multiTimer.nextStage(HiveCopyEntityHelper.Stages.CREATE_LOCATIONS);
HiveLocationDescriptor sourceLocation = HiveLocationDescriptor.forPartition(this.partition, hiveCopyEntityHelper.getDataset().fs, this.properties);
HiveLocationDescriptor desiredTargetLocation = HiveLocationDescriptor.forPartition(targetPartition, hiveCopyEntityHelper.getTargetFs(), this.properties);
Optional<HiveLocationDescriptor> existingTargetLocation = this.existingTargetPartition.isPresent() ? Optional.of(HiveLocationDescriptor.forPartition(this.existingTargetPartition.get(), hiveCopyEntityHelper.getTargetFs(), this.properties)) : Optional.<HiveLocationDescriptor>absent();
multiTimer.nextStage(HiveCopyEntityHelper.Stages.FULL_PATH_DIFF);
HiveCopyEntityHelper.DiffPathSet diffPathSet = HiveCopyEntityHelper.fullPathDiff(sourceLocation, desiredTargetLocation, existingTargetLocation, Optional.<Partition>absent(), multiTimer, hiveCopyEntityHelper);
multiTimer.nextStage(HiveCopyEntityHelper.Stages.CREATE_DELETE_UNITS);
if (diffPathSet.pathsToDelete.size() > 0) {
DeleteFileCommitStep deleteStep = DeleteFileCommitStep.fromPaths(hiveCopyEntityHelper.getTargetFs(), diffPathSet.pathsToDelete, hiveCopyEntityHelper.getDataset().properties);
copyEntities.add(new PrePublishStep(fileSet, Maps.<String, String>newHashMap(), deleteStep, stepPriority++));
}
multiTimer.nextStage(HiveCopyEntityHelper.Stages.CREATE_COPY_UNITS);
for (CopyableFile.Builder builder : hiveCopyEntityHelper.getCopyableFilesFromPaths(diffPathSet.filesToCopy, hiveCopyEntityHelper.getConfiguration(), Optional.of(this.partition))) {
CopyableFile fileEntity = builder.fileSet(fileSet).checksum(new byte[0]).datasetOutputPath(desiredTargetLocation.location.toString()).build();
this.hiveCopyEntityHelper.setCopyableFileDatasets(fileEntity);
copyEntities.add(fileEntity);
}
log.info("Created {} copy entities for partition {}", copyEntities.size(), this.partition.getCompleteName());
return copyEntities;
}
}
Aggregations