[HUDI-159] Redesigning bundles for lighter-weight integrations

- Documented principles applied for redesign at packaging/README.md
 - No longer depends on incl commons-codec, commons-io, commons-pool, commons-dbcp, commons-lang, commons-logging, avro-mapred
 - Introduce new FileIOUtils & added checkstyle rule for illegal import of above
 - Parquet, Avro dependencies moved to provided scope to enable being picked up from Hive/Spark/Presto instead
 - Pickup jackson jars for Hive sync tool from HIVE_HOME & unbundling jackson everywhere
 - Remove hive-jdbc standalone jar from being bundled in Spark/Hive/Utilities bundles
 - 6.5x reduced number of classes across bundles

hudi-client/src/main/java/org/apache/hudi/io/compact/strategy/BoundedPartitionAwareCompactionStrategy.java

@@ -18,13 +18,14 @@
 
 package org.apache.hudi.io.compact.strategy;
 
+import com.google.common.annotations.VisibleForTesting;
 import java.text.SimpleDateFormat;
+import java.util.Calendar;
 import java.util.Comparator;
 import java.util.Date;
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
-import org.apache.commons.lang3.time.DateUtils;
 import org.apache.hudi.avro.model.HoodieCompactionOperation;
 import org.apache.hudi.avro.model.HoodieCompactionPlan;
 import org.apache.hudi.config.HoodieWriteConfig;
@@ -45,8 +46,8 @@ public class BoundedPartitionAwareCompactionStrategy extends DayBasedCompactionS
   public List<HoodieCompactionOperation> orderAndFilter(HoodieWriteConfig writeConfig,
       List<HoodieCompactionOperation> operations, List<HoodieCompactionPlan> pendingCompactionPlans) {
     // The earliest partition to compact - current day minus the target partitions limit
-    String earliestPartitionPathToCompact = dateFormat.format(DateUtils.addDays(new Date(), -1 * writeConfig
-            .getTargetPartitionsPerDayBasedCompaction()));
+    String earliestPartitionPathToCompact = dateFormat.format(
+        getDateAtOffsetFromToday(-1 * writeConfig.getTargetPartitionsPerDayBasedCompaction()));
     // Filter out all partitions greater than earliestPartitionPathToCompact
     List<HoodieCompactionOperation> eligibleCompactionOperations = operations.stream()
         .collect(Collectors.groupingBy(HoodieCompactionOperation::getPartitionPath)).entrySet().stream()
@@ -61,8 +62,8 @@ public class BoundedPartitionAwareCompactionStrategy extends DayBasedCompactionS
   @Override
   public List<String> filterPartitionPaths(HoodieWriteConfig writeConfig, List<String> partitionPaths) {
     // The earliest partition to compact - current day minus the target partitions limit
-    String earliestPartitionPathToCompact = dateFormat.format(DateUtils.addDays(new Date(), -1 * writeConfig
-        .getTargetPartitionsPerDayBasedCompaction()));
+    String earliestPartitionPathToCompact = dateFormat.format(
+        getDateAtOffsetFromToday(-1 * writeConfig.getTargetPartitionsPerDayBasedCompaction()));
     // Get all partitions and sort them
     List<String> filteredPartitionPaths = partitionPaths.stream().map(partition -> partition.replace("/", "-"))
         .sorted(Comparator.reverseOrder()).map(partitionPath -> partitionPath.replace("-", "/"))
@@ -70,4 +71,11 @@ public class BoundedPartitionAwareCompactionStrategy extends DayBasedCompactionS
         .collect(Collectors.toList());
     return filteredPartitionPaths;
   }
+
+  @VisibleForTesting
+  public static Date getDateAtOffsetFromToday(int offset) {
+    Calendar calendar = Calendar.getInstance();
+    calendar.add(Calendar.DATE, offset);
+    return calendar.getTime();
+  }
 }

hudi-client/src/main/java/org/apache/hudi/metrics/Metrics.java

@@ -22,7 +22,6 @@ import com.codahale.metrics.Gauge;
 import com.codahale.metrics.MetricRegistry;
 import com.google.common.io.Closeables;
 import java.io.Closeable;
-import org.apache.commons.configuration.ConfigurationException;
 import org.apache.hudi.config.HoodieWriteConfig;
 import org.apache.hudi.exception.HoodieException;
 import org.apache.log4j.LogManager;
@@ -37,9 +36,9 @@ public class Metrics {
   private static volatile boolean initialized = false;
   private static Metrics metrics = null;
   private final MetricRegistry registry;
-  private MetricsReporter reporter = null;
+  private MetricsReporter reporter;
 
-  private Metrics(HoodieWriteConfig metricConfig) throws ConfigurationException {
+  private Metrics(HoodieWriteConfig metricConfig) {
     registry = new MetricRegistry();
 
     reporter = MetricsReporterFactory.createReporter(metricConfig, registry);
@@ -72,7 +71,7 @@ public class Metrics {
     }
     try {
       metrics = new Metrics(metricConfig);
-    } catch (ConfigurationException e) {
+    } catch (Exception e) {
       throw new HoodieException(e);
     }
     initialized = true;