Adding Delete functionality to the HBaseSource

5 files changed, 50 insertions, 13 deletions

diff --git a/src/main/java/parallelai/spyglass/hbase/HBaseConstants.java b/src/main/java/parallelai/spyglass/hbase/HBaseConstants.java
index 5baf20e..25b89cb 100644
--- a/src/main/java/parallelai/spyglass/hbase/HBaseConstants.java
+++ b/src/main/java/parallelai/spyglass/hbase/HBaseConstants.java
@@ -19,4 +19,5 @@ public class HBaseConstants {
   public static final String USE_SALT = "hbase.%s.use.salt";
   public static final String SALT_PREFIX = "hbase.%s.salt.prefix";
 
+  public static final String SINK_MODE = "hbase.%s.sink.mode";
 }
diff --git a/src/main/java/parallelai/spyglass/hbase/HBaseOutputFormat.java b/src/main/java/parallelai/spyglass/hbase/HBaseOutputFormat.java
index 40f1faf..c145eb0 100644
--- a/src/main/java/parallelai/spyglass/hbase/HBaseOutputFormat.java
+++ b/src/main/java/parallelai/spyglass/hbase/HBaseOutputFormat.java
@@ -2,6 +2,7 @@ package parallelai.spyglass.hbase;
 
 import java.io.IOException;
 
+import cascading.tap.SinkMode;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.fs.FileSystem;
@@ -9,24 +10,32 @@ import org.apache.hadoop.hbase.HBaseConfiguration;
 import org.apache.hadoop.hbase.client.HTable;
 import org.apache.hadoop.hbase.client.Put;
 import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
-import org.apache.hadoop.mapred.FileAlreadyExistsException;
-import org.apache.hadoop.mapred.InvalidJobConfException;
-import org.apache.hadoop.mapred.JobConf;
-import org.apache.hadoop.mapred.FileOutputFormat;
-import org.apache.hadoop.mapred.RecordWriter;
-import org.apache.hadoop.mapred.Reporter;
+import org.apache.hadoop.mapred.*;
 import org.apache.hadoop.util.Progressable;
 
 /**
  * Convert Map/Reduce output and write it to an HBase table
  */
 public class HBaseOutputFormat extends
-FileOutputFormat<ImmutableBytesWritable, Put> {
+FileOutputFormat<ImmutableBytesWritable, Put> implements JobConfigurable {
 
   /** JobConf parameter that specifies the output table */
   public static final String OUTPUT_TABLE = "hbase.mapred.outputtable";
   private final Log LOG = LogFactory.getLog(HBaseOutputFormat.class);
 
+  private SinkMode sinkMode = SinkMode.UPDATE;
+
+  @Override
+  public void configure(JobConf conf) {
+      sinkMode = SinkMode.valueOf(
+        conf.get(
+            String.format(
+                HBaseConstants.SINK_MODE, conf.get(HBaseOutputFormat.OUTPUT_TABLE)
+            )
+        )
+      );
+  }
+
 
   @Override
   @SuppressWarnings("unchecked")
@@ -43,8 +52,11 @@ FileOutputFormat<ImmutableBytesWritable, Put> {
       LOG.error(e);
       throw e;
     }
+    // TODO: Should Autoflush be set to true ????
     table.setAutoFlush(false);
-    return new HBaseRecordWriter(table);
+    HBaseRecordWriter recordWriter = new HBaseRecordWriter(table);
+    recordWriter.setSinkMode(sinkMode);
+    return recordWriter;
   }
 
   @Override
diff --git a/src/main/java/parallelai/spyglass/hbase/HBaseRawScheme.java b/src/main/java/parallelai/spyglass/hbase/HBaseRawScheme.java
index 7b62c88..832ce95 100644
--- a/src/main/java/parallelai/spyglass/hbase/HBaseRawScheme.java
+++ b/src/main/java/parallelai/spyglass/hbase/HBaseRawScheme.java
@@ -278,7 +278,7 @@ public class HBaseRawScheme extends Scheme<JobConf, RecordReader, OutputCollecto
 
 		public void copyValue(Result oldValue, Result newValue) {
 			if (null != oldValue && null != newValue) {
-				oldValue.copyFrom(newValue);
+//				oldValue.copyFrom(newValue);
 			}
 		}
 
diff --git a/src/main/java/parallelai/spyglass/hbase/HBaseRecordWriter.java b/src/main/java/parallelai/spyglass/hbase/HBaseRecordWriter.java
index 1cca133..50aa116 100644
--- a/src/main/java/parallelai/spyglass/hbase/HBaseRecordWriter.java
+++ b/src/main/java/parallelai/spyglass/hbase/HBaseRecordWriter.java
@@ -2,6 +2,8 @@ package parallelai.spyglass.hbase;
 
 import java.io.IOException;
 
+import cascading.tap.SinkMode;
+import org.apache.hadoop.hbase.client.Delete;
 import org.apache.hadoop.hbase.client.HTable;
 import org.apache.hadoop.hbase.client.Put;
 import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
@@ -15,6 +17,7 @@ import org.apache.hadoop.mapred.Reporter;
 public class HBaseRecordWriter
   implements RecordWriter<ImmutableBytesWritable, Put> {
   private HTable m_table;
+  private SinkMode m_sinkMode = SinkMode.UPDATE;
 
   /**
    * Instantiate a TableRecordWriter with the HBase HClient for writing.
@@ -30,8 +33,23 @@ public class HBaseRecordWriter
     m_table.close();
   }
 
+  public void setSinkMode(SinkMode sinkMode) {
+      m_sinkMode = sinkMode;
+  }
+
   public void write(ImmutableBytesWritable key,
       Put value) throws IOException {
-    m_table.put(new Put(value));
+    switch(m_sinkMode) {
+        case UPDATE:
+            m_table.put(new Put(value));
+            break;
+
+        case REPLACE:
+            m_table.delete(new Delete(value.getRow()));
+            break;
+
+        default:
+            throw new IOException("Unknown Sink Mode : " + m_sinkMode);
+    }
   }
 }
diff --git a/src/main/java/parallelai/spyglass/hbase/HBaseTap.java b/src/main/java/parallelai/spyglass/hbase/HBaseTap.java
index 65873a0..07b5aa7 100644
--- a/src/main/java/parallelai/spyglass/hbase/HBaseTap.java
+++ b/src/main/java/parallelai/spyglass/hbase/HBaseTap.java
@@ -154,7 +154,7 @@ public class HBaseTap extends Tap<JobConf, RecordReader, OutputCollector> {
     if (isReplace() && conf.get("mapred.task.partition") == null) {
       try {
         deleteResource(conf);
-
+        conf.set( String.format(HBaseConstants.SINK_MODE, tableName), SinkMode.REPLACE.toString());
       } catch (IOException e) {
         throw new RuntimeException("could not delete resource: " + e);
       }
@@ -163,6 +163,7 @@ public class HBaseTap extends Tap<JobConf, RecordReader, OutputCollector> {
     else if (isUpdate()) {
       try {
           createResource(conf);
+          conf.set( String.format(HBaseConstants.SINK_MODE, tableName), SinkMode.UPDATE.toString());
       } catch (IOException e) {
           throw new RuntimeException(tableName + " does not exist !", e);
       }
@@ -220,8 +221,13 @@ public class HBaseTap extends Tap<JobConf, RecordReader, OutputCollector> {
 
   @Override
   public boolean deleteResource(JobConf jobConf) throws IOException {
-    // TODO: for now we don't do anything just to be safe
-    return true;
+      HBaseAdmin hBaseAdmin = getHBaseAdmin(jobConf);
+
+      if (hBaseAdmin.tableExists(tableName)) {
+          return true;
+      } else {
+          throw new IOException("DELETE records: " + tableName + " does NOT EXIST!!!");
+      }
   }
 
   @Override