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HBASE-12459 Use a non-managed Table in mapred.TableOutputFormat

This commit is contained in:
Nick Dimiduk 2014-11-17 08:36:08 +01:00
parent dcba045526
commit f38efa79e6
1 changed files with 24 additions and 29 deletions
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51
hbase-server/src/main/java/org/apache/hadoop/hbase/mapred/TableOutputFormat.java
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@ -27,6 +27,8 @@ import org.apache.hadoop.hbase.classification.InterfaceStability;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Table;
@ -44,8 +46,7 @@ import org.apache.hadoop.util.Progressable;
*/
@InterfaceAudience.Public
@InterfaceStability.Stable
public class TableOutputFormat extends
FileOutputFormat<ImmutableBytesWritable, Put> {
public class TableOutputFormat extends FileOutputFormat<ImmutableBytesWritable, Put> {
/** JobConf parameter that specifies the output table */
public static final String OUTPUT_TABLE = "hbase.mapred.outputtable";
@ -53,55 +54,49 @@ FileOutputFormat<ImmutableBytesWritable, Put> {
/**
* Convert Reduce output (key, value) to (HStoreKey, KeyedDataArrayWritable)
* and write to an HBase table
* and write to an HBase table.
*/
protected static class TableRecordWriter
implements RecordWriter<ImmutableBytesWritable, Put> {
private Table m_table;
protected static class TableRecordWriter implements RecordWriter<ImmutableBytesWritable, Put> {
private final Connection conn;
private final Table table;
/**
* Instantiate a TableRecordWriter with the HBase HClient for writing.
*
* @param table
* Instantiate a TableRecordWriter with the HBase HClient for writing. Assumes control over the
* lifecycle of {@code conn}.
*/
public TableRecordWriter(Table table) {
m_table = table;
public TableRecordWriter(Connection conn, TableName tableName) throws IOException {
this.conn = conn;
this.table = conn.getTable(tableName);
((HTable) this.table).setAutoFlush(false, true);
}
public void close(Reporter reporter)
throws IOException {
m_table.close();
public void close(Reporter reporter) throws IOException {
table.close();
conn.close();
}
public void write(ImmutableBytesWritable key,
Put value) throws IOException {
m_table.put(new Put(value));
public void write(ImmutableBytesWritable key, Put value) throws IOException {
table.put(new Put(value));
}
}
@Override
@SuppressWarnings("unchecked")
public RecordWriter getRecordWriter(FileSystem ignored,
JobConf job, String name, Progressable progress) throws IOException {
// expecting exactly one path
public RecordWriter<ImmutableBytesWritable, Put> getRecordWriter(FileSystem ignored, JobConf job,
String name, Progressable progress) throws IOException {
TableName tableName = TableName.valueOf(job.get(OUTPUT_TABLE));
HTable table = null;
Connection conn = null;
try {
table = new HTable(HBaseConfiguration.create(job), tableName);
conn = ConnectionFactory.createConnection(HBaseConfiguration.create(job));
} catch(IOException e) {
LOG.error(e);
throw e;
}
table.setAutoFlush(false, true);
return new TableRecordWriter(table);
return new TableRecordWriter(conn, tableName);
}
@Override
public void checkOutputSpecs(FileSystem ignored, JobConf job)
throws FileAlreadyExistsException, InvalidJobConfException, IOException {
String tableName = job.get(OUTPUT_TABLE);
if(tableName == null) {
throw new IOException("Must specify table name");