From b72c234dd35c3eb807e8050385adf697dcf97fad Mon Sep 17 00:00:00 2001 From: rotem Date: Sun, 16 Jun 2013 12:09:42 +0300 Subject: Adding HBase raw taps and source, bumping needed dependency versions, bumping scala version --- .../parallelai/spyglass/hbase/HBaseRawTap.java | 311 +++++++++++++++++++++ 1 file changed, 311 insertions(+) create mode 100644 src/main/java/parallelai/spyglass/hbase/HBaseRawTap.java (limited to 'src/main/java/parallelai/spyglass/hbase/HBaseRawTap.java') diff --git a/src/main/java/parallelai/spyglass/hbase/HBaseRawTap.java b/src/main/java/parallelai/spyglass/hbase/HBaseRawTap.java new file mode 100644 index 0000000..738fd51 --- /dev/null +++ b/src/main/java/parallelai/spyglass/hbase/HBaseRawTap.java @@ -0,0 +1,311 @@ +/* + * Copyright (c) 2009 Concurrent, Inc. + * + * This work has been released into the public domain + * by the copyright holder. This applies worldwide. + * + * In case this is not legally possible: + * The copyright holder grants any entity the right + * to use this work for any purpose, without any + * conditions, unless such conditions are required by law. + */ + +package parallelai.spyglass.hbase; + +import java.io.IOException; +import java.util.UUID; + +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.fs.Path; +import org.apache.hadoop.hbase.HBaseConfiguration; +import org.apache.hadoop.hbase.HColumnDescriptor; +import org.apache.hadoop.hbase.HTableDescriptor; +import org.apache.hadoop.hbase.MasterNotRunningException; +import org.apache.hadoop.hbase.ZooKeeperConnectionException; +import org.apache.hadoop.hbase.client.HBaseAdmin; +import org.apache.hadoop.hbase.client.Scan; +import org.apache.hadoop.hbase.mapreduce.TableOutputFormat; +import org.apache.hadoop.mapred.FileInputFormat; +import org.apache.hadoop.mapred.JobConf; +import org.apache.hadoop.mapred.OutputCollector; +import org.apache.hadoop.mapred.RecordReader; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import cascading.flow.FlowProcess; +import cascading.tap.SinkMode; +import cascading.tap.Tap; +import cascading.tap.hadoop.io.HadoopTupleEntrySchemeIterator; +import cascading.tuple.TupleEntryCollector; +import cascading.tuple.TupleEntryIterator; + +import org.apache.hadoop.hbase.mapreduce.TableInputFormat; + +/** + * The HBaseRawTap class is a {@link Tap} subclass. It is used in conjunction with + * the {@HBaseRawScheme} to allow for the reading and writing + * of data to and from a HBase cluster. + */ +@SuppressWarnings({ "deprecation", "rawtypes" }) +public class HBaseRawTap extends Tap { + /** + * + */ + private static final long serialVersionUID = 8019189493428493323L; + + /** Field LOG */ + private static final Logger LOG = LoggerFactory.getLogger(HBaseRawTap.class); + + private final String id = UUID.randomUUID().toString(); + + /** Field SCHEME */ + public static final String SCHEME = "hbase"; + + /** Field hBaseAdmin */ + private transient HBaseAdmin hBaseAdmin; + + /** Field hostName */ + private String quorumNames; + /** Field tableName */ + private String tableName; + private String base64Scan; + + /** + * Constructor HBaseTap creates a new HBaseTap instance. + * + * @param tableName + * of type String + * @param HBaseFullScheme + * of type HBaseFullScheme + */ + public HBaseRawTap(String tableName, HBaseRawScheme HBaseFullScheme) { + super(HBaseFullScheme, SinkMode.UPDATE); + this.tableName = tableName; + } + + /** + * Constructor HBaseTap creates a new HBaseTap instance. + * + * @param tableName + * of type String + * @param HBaseFullScheme + * of type HBaseFullScheme + * @param sinkMode + * of type SinkMode + */ + public HBaseRawTap(String tableName, HBaseRawScheme HBaseFullScheme, SinkMode sinkMode) { + super(HBaseFullScheme, sinkMode); + this.tableName = tableName; + } + + /** + * Constructor HBaseTap creates a new HBaseTap instance. + * + * @param tableName + * of type String + * @param HBaseFullScheme + * of type HBaseFullScheme + */ + public HBaseRawTap(String quorumNames, String tableName, HBaseRawScheme HBaseFullScheme) { + super(HBaseFullScheme, SinkMode.UPDATE); + this.quorumNames = quorumNames; + this.tableName = tableName; + } + + /** + * Constructor HBaseTap creates a new HBaseTap instance. + * + * @param tableName + * of type String + * @param HBaseFullScheme + * of type HBaseFullScheme + * @param sinkMode + * of type SinkMode + */ + public HBaseRawTap(String quorumNames, String tableName, HBaseRawScheme HBaseFullScheme, SinkMode sinkMode) { + super(HBaseFullScheme, sinkMode); + this.quorumNames = quorumNames; + this.tableName = tableName; + } + + /** + * Constructor HBaseTap creates a new HBaseTap instance. + * + * @param quorumNames + * @param tableName + * @param HBaseFullScheme + * @param base64Scan + * @param sinkMode + */ + public HBaseRawTap(String quorumNames, String tableName, HBaseRawScheme HBaseFullScheme, String base64Scan, SinkMode sinkMode) { + super(HBaseFullScheme, sinkMode); + this.quorumNames = quorumNames; + this.tableName = tableName; + this.base64Scan = base64Scan; + } + + /** + * Method getTableName returns the tableName of this HBaseTap object. + * + * @return the tableName (type String) of this HBaseTap object. + */ + public String getTableName() { + return tableName; + } + + public Path getPath() { + return new Path(SCHEME + ":/" + tableName.replaceAll(":", "_")); + } + + protected HBaseAdmin getHBaseAdmin(JobConf conf) throws MasterNotRunningException, ZooKeeperConnectionException { + if (hBaseAdmin == null) { + Configuration hbaseConf = HBaseConfiguration.create(conf); + hBaseAdmin = new HBaseAdmin(hbaseConf); + } + + return hBaseAdmin; + } + + @Override + public void sinkConfInit(FlowProcess process, JobConf conf) { + if (quorumNames != null) { + conf.set("hbase.zookeeper.quorum", quorumNames); + } + + LOG.debug("sinking to table: {}", tableName); + + if (isReplace() && conf.get("mapred.task.partition") == null) { + try { + deleteResource(conf); + + } catch (IOException e) { + throw new RuntimeException("could not delete resource: " + e); + } + } + + else if (isUpdate() || isReplace()) { + try { + createResource(conf); + } catch (IOException e) { + throw new RuntimeException(tableName + " does not exist !", e); + } + + } + + conf.set(TableOutputFormat.OUTPUT_TABLE, tableName); + super.sinkConfInit(process, conf); + } + + @Override + public String getIdentifier() { + return id; + } + + @Override + public TupleEntryIterator openForRead(FlowProcess jobConfFlowProcess, RecordReader recordReader) + throws IOException { + return new HadoopTupleEntrySchemeIterator(jobConfFlowProcess, this, recordReader); + } + + @Override + public TupleEntryCollector openForWrite(FlowProcess jobConfFlowProcess, OutputCollector outputCollector) + throws IOException { + HBaseTapCollector hBaseCollector = new HBaseTapCollector(jobConfFlowProcess, this); + hBaseCollector.prepare(); + return hBaseCollector; + } + + @Override + public boolean createResource(JobConf jobConf) throws IOException { + HBaseAdmin hBaseAdmin = getHBaseAdmin(jobConf); + + if (hBaseAdmin.tableExists(tableName)) { + return true; + } + + LOG.info("creating hbase table: {}", tableName); + + HTableDescriptor tableDescriptor = new HTableDescriptor(tableName); + + String[] familyNames = ((HBaseRawScheme) getScheme()).getFamilyNames(); + + for (String familyName : familyNames) { + tableDescriptor.addFamily(new HColumnDescriptor(familyName)); + } + + hBaseAdmin.createTable(tableDescriptor); + + return true; + } + + @Override + public boolean deleteResource(JobConf jobConf) throws IOException { + if (getHBaseAdmin(jobConf).tableExists(tableName)) { + if (getHBaseAdmin(jobConf).isTableEnabled(tableName)) + getHBaseAdmin(jobConf).disableTable(tableName); + getHBaseAdmin(jobConf).deleteTable(tableName); + } + return true; + } + + @Override + public boolean resourceExists(JobConf jobConf) throws IOException { + return getHBaseAdmin(jobConf).tableExists(tableName); + } + + @Override + public long getModifiedTime(JobConf jobConf) throws IOException { + return System.currentTimeMillis(); // currently unable to find last mod + // time + // on a table + } + + @Override + public void sourceConfInit(FlowProcess process, JobConf conf) { + // a hack for MultiInputFormat to see that there is a child format + FileInputFormat.setInputPaths(conf, getPath()); + + if (quorumNames != null) { + conf.set("hbase.zookeeper.quorum", quorumNames); + } + + LOG.debug("sourcing from table: {}", tableName); + conf.set(TableInputFormat.INPUT_TABLE, tableName); + if (null != base64Scan) + conf.set(TableInputFormat.SCAN, base64Scan); + + super.sourceConfInit(process, conf); + } + + @Override + public boolean equals(Object object) { + if (this == object) { + return true; + } + if (object == null || getClass() != object.getClass()) { + return false; + } + if (!super.equals(object)) { + return false; + } + + HBaseRawTap hBaseTap = (HBaseRawTap) object; + + if (tableName != null ? !tableName.equals(hBaseTap.tableName) : hBaseTap.tableName != null) { + return false; + } + + if (base64Scan != null ? !base64Scan.equals(hBaseTap.base64Scan) : hBaseTap.base64Scan != null) { + return false; + } + + return true; + } + + @Override + public int hashCode() { + int result = super.hashCode(); + result = 31 * result + (tableName != null ? tableName.hashCode() : 0) + (base64Scan != null ? base64Scan.hashCode() : 0); + return result; + } +} -- cgit v1.2.3