@Override
public List<String> getAllTables(final String dbName) throws HiveMetastoreException {
ArrayList<String> tables = new ArrayList<>();
for (HiveObjectSpec spec : specToTable.keySet()) {
if (spec.getDbName().equals(dbName)) {
tables.add(spec.getTableName());
}
}
return tables;
}
@Override
public List<String> getPartitionNames(String dbName, String tableName)
throws HiveMetastoreException {
List<String> partitionNames = new ArrayList<>();
HiveObjectSpec tableSpec = new HiveObjectSpec(dbName, tableName);
for (Map.Entry<HiveObjectSpec, Partition> entry : specToPartition.entrySet()) {
if (tableSpec.equals(entry.getKey().getTableSpec())) {
partitionNames.add(entry.getKey().getPartitionName());
}
}
return partitionNames;
}
@Override
public List<String> getTables(String dbName, String tableName) throws HiveMetastoreException {
if (!tableName.equals("*")) {
throw new RuntimeException("Only * (wildcard) is supported in " + "the mock client");
}
List<String> tableNames = new ArrayList<>();
for (HiveObjectSpec spec : specToTable.keySet()) {
if (spec.getDbName().equals(dbName)) {
tableNames.add(spec.getTableName());
}
}
return tableNames;
}
@Override
public void alterPartition(String dbName, String tableName, Partition partition)
throws HiveMetastoreException {
HiveObjectSpec tableSpec = new HiveObjectSpec(partition.getDbName(), partition.getTableName());
if (!specToTable.containsKey(tableSpec)) {
throw new HiveMetastoreException("Unknown table: " + tableSpec);
}
Table table = specToTable.get(tableSpec);
String partitionName = getPartitionName(table, partition);
HiveObjectSpec partitionSpec =
new HiveObjectSpec(tableSpec.getDbName(), tableSpec.getTableName(), partitionName);
if (!specToPartition.containsKey(partitionSpec)) {
throw new HiveMetastoreException("Partition does not exist: " + partitionSpec);
}
specToPartition.put(partitionSpec, partition);
}
@Override
public Partition addPartition(Partition partition) throws HiveMetastoreException {
HiveObjectSpec tableSpec = new HiveObjectSpec(partition.getDbName(), partition.getTableName());
if (!specToTable.containsKey(tableSpec)) {
throw new HiveMetastoreException("Unknown table: " + tableSpec);
}
Table table = specToTable.get(tableSpec);
String partitionName = getPartitionName(table, partition);
HiveObjectSpec partitionSpec =
new HiveObjectSpec(tableSpec.getDbName(), tableSpec.getTableName(), partitionName);
if (specToPartition.containsKey(partitionSpec)) {
throw new HiveMetastoreException("Partition already exists: " + partitionSpec);
}
specToPartition.put(partitionSpec, partition);
return partition;
}
protected void reduce(LongWritable key, Iterable<Text> values, Context context)
throws IOException, InterruptedException {
for (Text value : values) {
Pair<TaskEstimate, HiveObjectSpec> input =
MetastoreReplicationJob.deseralizeJobResult(value.toString());
TaskEstimate estimate = input.getLeft();
HiveObjectSpec spec = input.getRight();
String result = value.toString();
String extra = "";
try {
if (estimate.getTaskType() == TaskEstimate.TaskType.CHECK_PARTITION) {
// Table exists in source, but not in dest. It should copy the table.
TaskEstimate newEstimate = estimator.analyze(spec);
result = MetastoreReplicationJob.serializeJobResult(newEstimate, spec);
}
} catch (HiveMetastoreException e) {
LOG.error(
String.format(
"Hit exception during db:%s, tbl:%s, part:%s",
spec.getDbName(), spec.getTableName(), spec.getPartitionName()),
e);
extra =
String.format(
"exception in %s of mapper = %s",
estimate.getTaskType().toString(), context.getTaskAttemptID().toString());
}
context.write(new Text(result), new Text(extra));
++this.count;
if (this.count % 100 == 0) {
LOG.info("Processed " + this.count + " entities");
}
}
}
