HBASE-3727 MultiHFileOutputFormat (yi liang)
This commit is contained in:
Jerry He
parent
84b7010a30
commit
60847a2d76
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@ -67,6 +67,7 @@ import org.apache.hadoop.hbase.regionserver.HStore;
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import org.apache.hadoop.hbase.regionserver.StoreFile;
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import org.apache.hadoop.hbase.regionserver.StoreFileWriter;
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import org.apache.hadoop.hbase.util.Bytes;
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import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
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import org.apache.hadoop.io.NullWritable;
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import org.apache.hadoop.io.SequenceFile;
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import org.apache.hadoop.io.Text;
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@ -131,224 +132,254 @@ public class HFileOutputFormat2
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}
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static <V extends Cell> RecordWriter<ImmutableBytesWritable, V>
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createRecordWriter(final TaskAttemptContext context)
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throws IOException {
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createRecordWriter(final TaskAttemptContext context) throws IOException {
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return new HFileRecordWriter<V>(context, null);
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}
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// Get the path of the temporary output file
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final Path outputPath = FileOutputFormat.getOutputPath(context);
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final Path outputdir = new FileOutputCommitter(outputPath, context).getWorkPath();
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final Configuration conf = context.getConfiguration();
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final FileSystem fs = outputdir.getFileSystem(conf);
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// These configs. are from hbase-*.xml
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final long maxsize = conf.getLong(HConstants.HREGION_MAX_FILESIZE,
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HConstants.DEFAULT_MAX_FILE_SIZE);
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// Invented config. Add to hbase-*.xml if other than default compression.
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final String defaultCompressionStr = conf.get("hfile.compression",
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Compression.Algorithm.NONE.getName());
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final Algorithm defaultCompression = HFileWriterImpl
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.compressionByName(defaultCompressionStr);
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final boolean compactionExclude = conf.getBoolean(
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"hbase.mapreduce.hfileoutputformat.compaction.exclude", false);
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protected static class HFileRecordWriter<V extends Cell>
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extends RecordWriter<ImmutableBytesWritable, V> {
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private final TaskAttemptContext context;
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private final Path outputPath;
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private final Path outputDir;
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private final Configuration conf;
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private final FileSystem fs;
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// create a map from column family to the compression algorithm
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final Map<byte[], Algorithm> compressionMap = createFamilyCompressionMap(conf);
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final Map<byte[], BloomType> bloomTypeMap = createFamilyBloomTypeMap(conf);
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final Map<byte[], Integer> blockSizeMap = createFamilyBlockSizeMap(conf);
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private final long maxsize;
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String dataBlockEncodingStr = conf.get(DATABLOCK_ENCODING_OVERRIDE_CONF_KEY);
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final Map<byte[], DataBlockEncoding> datablockEncodingMap
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= createFamilyDataBlockEncodingMap(conf);
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final DataBlockEncoding overriddenEncoding;
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if (dataBlockEncodingStr != null) {
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overriddenEncoding = DataBlockEncoding.valueOf(dataBlockEncodingStr);
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} else {
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overriddenEncoding = null;
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private final Algorithm defaultCompression;
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private final boolean compactionExclude;
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private final Map<byte[], Algorithm> compressionMap;
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private final Map<byte[], BloomType> bloomTypeMap;
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private final Map<byte[], Integer> blockSizeMap;
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private final Map<byte[], DataBlockEncoding> datablockEncodingMap;
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private final DataBlockEncoding overriddenEncoding;
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private final Map<byte[], WriterLength> writers;
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private byte[] previousRow;
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private final byte[] now;
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private boolean rollRequested;
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/**
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* Mapredue job will create a temp path for outputting results. If out != null, it means that
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* the caller has set the temp working dir; If out == null, it means we need to set it here.
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* Used by HFileOutputFormat2 and MultiHFileOutputFormat. MultiHFileOutputFormat will give us
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* temp working dir at the table level and HFileOutputFormat2 has to set it here within this
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* constructor.
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*/
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public HFileRecordWriter(final TaskAttemptContext taContext, final Path out)
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throws IOException {
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// Get the path of the temporary output file
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context = taContext;
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if (out == null) {
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outputPath = FileOutputFormat.getOutputPath(context);
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outputDir = new FileOutputCommitter(outputPath, context).getWorkPath();
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} else {
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outputPath = out;
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outputDir = outputPath;
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}
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conf = context.getConfiguration();
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fs = outputDir.getFileSystem(conf);
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// These configs. are from hbase-*.xml
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maxsize = conf.getLong(HConstants.HREGION_MAX_FILESIZE, HConstants.DEFAULT_MAX_FILE_SIZE);
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// Invented config. Add to hbase-*.xml if other than default compression.
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String defaultCompressionStr = conf.get("hfile.compression", Compression.Algorithm.NONE.getName());
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defaultCompression = HFileWriterImpl.compressionByName(defaultCompressionStr);
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compactionExclude =
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conf.getBoolean("hbase.mapreduce.hfileoutputformat.compaction.exclude", false);
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// create a map from column family to the compression algorithm
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compressionMap = createFamilyCompressionMap(conf);
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bloomTypeMap = createFamilyBloomTypeMap(conf);
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blockSizeMap = createFamilyBlockSizeMap(conf);
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// Config for data block encoding
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String dataBlockEncodingStr = conf.get(DATABLOCK_ENCODING_OVERRIDE_CONF_KEY);
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datablockEncodingMap = createFamilyDataBlockEncodingMap(conf);
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if (dataBlockEncodingStr != null) {
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overriddenEncoding = DataBlockEncoding.valueOf(dataBlockEncodingStr);
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} else {
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overriddenEncoding = null;
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}
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writers = new TreeMap<byte[], WriterLength>(Bytes.BYTES_COMPARATOR);
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previousRow = HConstants.EMPTY_BYTE_ARRAY;
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now = Bytes.toBytes(EnvironmentEdgeManager.currentTime());
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rollRequested = false;
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}
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return new RecordWriter<ImmutableBytesWritable, V>() {
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// Map of families to writers and how much has been output on the writer.
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private final Map<byte [], WriterLength> writers =
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new TreeMap<byte [], WriterLength>(Bytes.BYTES_COMPARATOR);
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private byte [] previousRow = HConstants.EMPTY_BYTE_ARRAY;
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private final byte [] now = Bytes.toBytes(System.currentTimeMillis());
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private boolean rollRequested = false;
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@Override
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public void write(ImmutableBytesWritable row, V cell) throws IOException {
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KeyValue kv = KeyValueUtil.ensureKeyValue(cell);
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@Override
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public void write(ImmutableBytesWritable row, V cell)
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throws IOException {
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KeyValue kv = KeyValueUtil.ensureKeyValue(cell);
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// null input == user explicitly wants to flush
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if (row == null && kv == null) {
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rollWriters();
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return;
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}
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// null input == user explicitly wants to flush
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if (row == null && kv == null) {
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rollWriters();
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return;
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}
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byte[] rowKey = CellUtil.cloneRow(kv);
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long length = kv.getLength();
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byte[] family = CellUtil.cloneFamily(kv);
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WriterLength wl = this.writers.get(family);
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byte [] rowKey = CellUtil.cloneRow(kv);
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long length = kv.getLength();
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byte [] family = CellUtil.cloneFamily(kv);
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WriterLength wl = this.writers.get(family);
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// If this is a new column family, verify that the directory exists
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if (wl == null) {
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fs.mkdirs(new Path(outputDir, Bytes.toString(family)));
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}
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// If this is a new column family, verify that the directory exists
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if (wl == null) {
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fs.mkdirs(new Path(outputdir, Bytes.toString(family)));
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}
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// If any of the HFiles for the column families has reached
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// maxsize, we need to roll all the writers
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if (wl != null && wl.written + length >= maxsize) {
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this.rollRequested = true;
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}
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// If any of the HFiles for the column families has reached
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// maxsize, we need to roll all the writers
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if (wl != null && wl.written + length >= maxsize) {
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this.rollRequested = true;
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}
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// This can only happen once a row is finished though
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if (rollRequested && Bytes.compareTo(this.previousRow, rowKey) != 0) {
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rollWriters();
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}
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// This can only happen once a row is finished though
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if (rollRequested && Bytes.compareTo(this.previousRow, rowKey) != 0) {
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rollWriters();
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}
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// create a new WAL writer, if necessary
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if (wl == null || wl.writer == null) {
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if (conf.getBoolean(LOCALITY_SENSITIVE_CONF_KEY, DEFAULT_LOCALITY_SENSITIVE)) {
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HRegionLocation loc = null;
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String tableName = conf.get(OUTPUT_TABLE_NAME_CONF_KEY);
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if (tableName != null) {
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try (Connection connection = ConnectionFactory.createConnection(conf);
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RegionLocator locator =
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connection.getRegionLocator(TableName.valueOf(tableName))) {
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loc = locator.getRegionLocation(rowKey);
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} catch (Throwable e) {
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LOG.warn("there's something wrong when locating rowkey: " +
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Bytes.toString(rowKey), e);
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loc = null;
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}
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// create a new WAL writer, if necessary
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if (wl == null || wl.writer == null) {
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if (conf.getBoolean(LOCALITY_SENSITIVE_CONF_KEY, DEFAULT_LOCALITY_SENSITIVE)) {
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HRegionLocation loc = null;
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String tableName = conf.get(OUTPUT_TABLE_NAME_CONF_KEY);
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if (tableName != null) {
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try (Connection connection = ConnectionFactory.createConnection(conf);
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RegionLocator locator = connection.getRegionLocator(TableName.valueOf(tableName))) {
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loc = locator.getRegionLocation(rowKey);
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} catch (Throwable e) {
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LOG.warn("there's something wrong when locating rowkey: " + Bytes.toString(rowKey),
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e);
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loc = null;
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}
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}
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if (null == loc) {
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if (null == loc) {
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if (LOG.isTraceEnabled()) {
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LOG.trace(
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"failed to get region location, so use default writer: " + Bytes.toString(rowKey));
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}
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wl = getNewWriter(family, conf, null);
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} else {
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if (LOG.isDebugEnabled()) {
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LOG.debug("first rowkey: [" + Bytes.toString(rowKey) + "]");
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}
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InetSocketAddress initialIsa = new InetSocketAddress(loc.getHostname(), loc.getPort());
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if (initialIsa.isUnresolved()) {
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if (LOG.isTraceEnabled()) {
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LOG.trace("failed to get region location, so use default writer: " +
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Bytes.toString(rowKey));
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LOG.trace("failed to resolve bind address: " + loc.getHostname() + ":"
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+ loc.getPort() + ", so use default writer");
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}
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wl = getNewWriter(family, conf, null);
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} else {
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if (LOG.isDebugEnabled()) {
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LOG.debug("first rowkey: [" + Bytes.toString(rowKey) + "]");
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}
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InetSocketAddress initialIsa =
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new InetSocketAddress(loc.getHostname(), loc.getPort());
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if (initialIsa.isUnresolved()) {
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if (LOG.isTraceEnabled()) {
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LOG.trace("failed to resolve bind address: " + loc.getHostname() + ":"
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+ loc.getPort() + ", so use default writer");
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}
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wl = getNewWriter(family, conf, null);
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} else {
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if(LOG.isDebugEnabled()) {
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LOG.debug("use favored nodes writer: " + initialIsa.getHostString());
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}
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wl = getNewWriter(family, conf, new InetSocketAddress[] { initialIsa });
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LOG.debug("use favored nodes writer: " + initialIsa.getHostString());
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}
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wl = getNewWriter(family, conf, new InetSocketAddress[] { initialIsa });
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}
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} else {
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wl = getNewWriter(family, conf, null);
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}
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}
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// we now have the proper WAL writer. full steam ahead
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kv.updateLatestStamp(this.now);
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wl.writer.append(kv);
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wl.written += length;
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// Copy the row so we know when a row transition.
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this.previousRow = rowKey;
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}
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private void rollWriters() throws IOException {
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for (WriterLength wl : this.writers.values()) {
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if (wl.writer != null) {
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LOG.info("Writer=" + wl.writer.getPath() +
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((wl.written == 0)? "": ", wrote=" + wl.written));
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close(wl.writer);
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}
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wl.writer = null;
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wl.written = 0;
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}
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this.rollRequested = false;
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}
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/* Create a new StoreFile.Writer.
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* @param family
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* @return A WriterLength, containing a new StoreFile.Writer.
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* @throws IOException
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*/
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@edu.umd.cs.findbugs.annotations.SuppressWarnings(value="BX_UNBOXING_IMMEDIATELY_REBOXED",
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justification="Not important")
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private WriterLength getNewWriter(byte[] family, Configuration conf,
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InetSocketAddress[] favoredNodes) throws IOException {
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WriterLength wl = new WriterLength();
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Path familydir = new Path(outputdir, Bytes.toString(family));
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Algorithm compression = compressionMap.get(family);
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compression = compression == null ? defaultCompression : compression;
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BloomType bloomType = bloomTypeMap.get(family);
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bloomType = bloomType == null ? BloomType.NONE : bloomType;
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Integer blockSize = blockSizeMap.get(family);
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blockSize = blockSize == null ? HConstants.DEFAULT_BLOCKSIZE : blockSize;
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DataBlockEncoding encoding = overriddenEncoding;
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encoding = encoding == null ? datablockEncodingMap.get(family) : encoding;
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encoding = encoding == null ? DataBlockEncoding.NONE : encoding;
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Configuration tempConf = new Configuration(conf);
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tempConf.setFloat(HConstants.HFILE_BLOCK_CACHE_SIZE_KEY, 0.0f);
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HFileContextBuilder contextBuilder = new HFileContextBuilder()
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.withCompression(compression)
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.withChecksumType(HStore.getChecksumType(conf))
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.withBytesPerCheckSum(HStore.getBytesPerChecksum(conf))
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.withBlockSize(blockSize);
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if (HFile.getFormatVersion(conf) >= HFile.MIN_FORMAT_VERSION_WITH_TAGS) {
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contextBuilder.withIncludesTags(true);
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}
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contextBuilder.withDataBlockEncoding(encoding);
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HFileContext hFileContext = contextBuilder.build();
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if (null == favoredNodes) {
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wl.writer =
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new StoreFileWriter.Builder(conf, new CacheConfig(tempConf), fs)
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.withOutputDir(familydir).withBloomType(bloomType)
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.withComparator(CellComparator.COMPARATOR).withFileContext(hFileContext).build();
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} else {
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wl.writer =
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new StoreFileWriter.Builder(conf, new CacheConfig(tempConf), new HFileSystem(fs))
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.withOutputDir(familydir).withBloomType(bloomType)
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.withComparator(CellComparator.COMPARATOR).withFileContext(hFileContext)
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.withFavoredNodes(favoredNodes).build();
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}
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this.writers.put(family, wl);
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return wl;
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}
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private void close(final StoreFileWriter w) throws IOException {
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if (w != null) {
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w.appendFileInfo(StoreFile.BULKLOAD_TIME_KEY,
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Bytes.toBytes(System.currentTimeMillis()));
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w.appendFileInfo(StoreFile.BULKLOAD_TASK_KEY,
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Bytes.toBytes(context.getTaskAttemptID().toString()));
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w.appendFileInfo(StoreFile.MAJOR_COMPACTION_KEY,
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Bytes.toBytes(true));
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w.appendFileInfo(StoreFile.EXCLUDE_FROM_MINOR_COMPACTION_KEY,
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Bytes.toBytes(compactionExclude));
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w.appendTrackedTimestampsToMetadata();
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w.close();
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wl = getNewWriter(family, conf, null);
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}
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}
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@Override
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public void close(TaskAttemptContext c)
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throws IOException, InterruptedException {
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for (WriterLength wl: this.writers.values()) {
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// we now have the proper WAL writer. full steam ahead
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kv.updateLatestStamp(this.now);
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wl.writer.append(kv);
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wl.written += length;
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// Copy the row so we know when a row transition.
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this.previousRow = rowKey;
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}
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private void rollWriters() throws IOException {
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for (WriterLength wl : this.writers.values()) {
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if (wl.writer != null) {
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LOG.info(
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"Writer=" + wl.writer.getPath() + ((wl.written == 0) ? "" : ", wrote=" + wl.written));
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close(wl.writer);
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}
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wl.writer = null;
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wl.written = 0;
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}
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};
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this.rollRequested = false;
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}
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/*
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* Create a new StoreFile.Writer.
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* @param family
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* @return A WriterLength, containing a new StoreFile.Writer.
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* @throws IOException
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*/
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@edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "BX_UNBOXING_IMMEDIATELY_REBOXED",
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justification = "Not important")
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private WriterLength getNewWriter(byte[] family, Configuration conf,
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InetSocketAddress[] favoredNodes) throws IOException {
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WriterLength wl = new WriterLength();
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Path familyDir = new Path(outputDir, Bytes.toString(family));
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Algorithm compression = compressionMap.get(family);
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compression = compression == null ? defaultCompression : compression;
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BloomType bloomType = bloomTypeMap.get(family);
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bloomType = bloomType == null ? BloomType.NONE : bloomType;
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Integer blockSize = blockSizeMap.get(family);
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blockSize = blockSize == null ? HConstants.DEFAULT_BLOCKSIZE : blockSize;
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DataBlockEncoding encoding = overriddenEncoding;
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encoding = encoding == null ? datablockEncodingMap.get(family) : encoding;
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encoding = encoding == null ? DataBlockEncoding.NONE : encoding;
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Configuration tempConf = new Configuration(conf);
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tempConf.setFloat(HConstants.HFILE_BLOCK_CACHE_SIZE_KEY, 0.0f);
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HFileContextBuilder contextBuilder = new HFileContextBuilder().withCompression(compression)
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.withChecksumType(HStore.getChecksumType(conf))
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.withBytesPerCheckSum(HStore.getBytesPerChecksum(conf)).withBlockSize(blockSize);
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if (HFile.getFormatVersion(conf) >= HFile.MIN_FORMAT_VERSION_WITH_TAGS) {
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contextBuilder.withIncludesTags(true);
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}
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contextBuilder.withDataBlockEncoding(encoding);
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HFileContext hFileContext = contextBuilder.build();
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if (null == favoredNodes) {
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wl.writer = new StoreFileWriter.Builder(conf, new CacheConfig(tempConf), fs)
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.withOutputDir(familyDir).withBloomType(bloomType)
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.withComparator(CellComparator.COMPARATOR).withFileContext(hFileContext).build();
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} else {
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wl.writer =
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new StoreFileWriter.Builder(conf, new CacheConfig(tempConf), new HFileSystem(fs))
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.withOutputDir(familyDir).withBloomType(bloomType)
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.withComparator(CellComparator.COMPARATOR).withFileContext(hFileContext)
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.withFavoredNodes(favoredNodes).build();
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}
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this.writers.put(family, wl);
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return wl;
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}
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private void close(final StoreFileWriter w) throws IOException {
|
||||
if (w != null) {
|
||||
w.appendFileInfo(StoreFile.BULKLOAD_TIME_KEY, Bytes.toBytes(EnvironmentEdgeManager.currentTime()));
|
||||
w.appendFileInfo(StoreFile.BULKLOAD_TASK_KEY,
|
||||
Bytes.toBytes(context.getTaskAttemptID().toString()));
|
||||
w.appendFileInfo(StoreFile.MAJOR_COMPACTION_KEY, Bytes.toBytes(true));
|
||||
w.appendFileInfo(StoreFile.EXCLUDE_FROM_MINOR_COMPACTION_KEY,
|
||||
Bytes.toBytes(compactionExclude));
|
||||
w.appendTrackedTimestampsToMetadata();
|
||||
w.close();
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
public void close(TaskAttemptContext c) throws IOException, InterruptedException {
|
||||
for (WriterLength wl : this.writers.values()) {
|
||||
close(wl.writer);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
|
|||
|
|
@ -0,0 +1,102 @@
|
|||
/**
|
||||
* Licensed to the Apache Software Foundation (ASF) under one or more contributor license
|
||||
* agreements. See the NOTICE file distributed with this work for additional information regarding
|
||||
* copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the
|
||||
* "License"); you may not use this file except in compliance with the License. You may obtain a
|
||||
* copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable
|
||||
* law or agreed to in writing, software distributed under the License is distributed on an "AS IS"
|
||||
* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License
|
||||
* for the specific language governing permissions and limitations under the License.
|
||||
*/
|
||||
package org.apache.hadoop.hbase.mapreduce;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.util.HashMap;
|
||||
import java.util.Map;
|
||||
import org.apache.commons.logging.Log;
|
||||
import org.apache.commons.logging.LogFactory;
|
||||
import org.apache.hadoop.hbase.classification.InterfaceAudience;
|
||||
import org.apache.hadoop.hbase.classification.InterfaceStability;
|
||||
import org.apache.hadoop.conf.Configuration;
|
||||
import org.apache.hadoop.fs.FileSystem;
|
||||
import org.apache.hadoop.fs.Path;
|
||||
import org.apache.hadoop.hbase.Cell;
|
||||
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
|
||||
import org.apache.hadoop.hbase.util.Bytes;
|
||||
import org.apache.hadoop.mapreduce.RecordWriter;
|
||||
import org.apache.hadoop.mapreduce.TaskAttemptContext;
|
||||
import org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter;
|
||||
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
|
||||
import org.apache.hadoop.hbase.mapreduce.HFileOutputFormat2;
|
||||
|
||||
import com.google.common.annotations.VisibleForTesting;
|
||||
/**
|
||||
* Create 3 level tree directory, first level is using table name as parent directory and then use
|
||||
* family name as child directory, and all related HFiles for one family are under child directory
|
||||
* -tableName1
|
||||
* -columnFamilyName1
|
||||
* -columnFamilyName2
|
||||
* -HFiles
|
||||
* -tableName2
|
||||
* -columnFamilyName1
|
||||
* -HFiles
|
||||
* -columnFamilyName2
|
||||
* <p>
|
||||
*/
|
||||
@InterfaceAudience.Public
|
||||
@InterfaceStability.Evolving
|
||||
@VisibleForTesting
|
||||
public class MultiHFileOutputFormat extends FileOutputFormat<ImmutableBytesWritable, Cell> {
|
||||
private static final Log LOG = LogFactory.getLog(MultiHFileOutputFormat.class);
|
||||
|
||||
@Override
|
||||
public RecordWriter<ImmutableBytesWritable, Cell>
|
||||
getRecordWriter(final TaskAttemptContext context) throws IOException, InterruptedException {
|
||||
return createMultiHFileRecordWriter(context);
|
||||
}
|
||||
|
||||
static <V extends Cell> RecordWriter<ImmutableBytesWritable, V>
|
||||
createMultiHFileRecordWriter(final TaskAttemptContext context) throws IOException {
|
||||
|
||||
// Get the path of the output directory
|
||||
final Path outputPath = FileOutputFormat.getOutputPath(context);
|
||||
final Path outputDir = new FileOutputCommitter(outputPath, context).getWorkPath();
|
||||
final Configuration conf = context.getConfiguration();
|
||||
final FileSystem fs = outputDir.getFileSystem(conf);
|
||||
|
||||
// Map of tables to writers
|
||||
final Map<ImmutableBytesWritable, RecordWriter<ImmutableBytesWritable, V>> tableWriters =
|
||||
new HashMap<ImmutableBytesWritable, RecordWriter<ImmutableBytesWritable, V>>();
|
||||
|
||||
return new RecordWriter<ImmutableBytesWritable, V>() {
|
||||
@Override
|
||||
public void write(ImmutableBytesWritable tableName, V cell)
|
||||
throws IOException, InterruptedException {
|
||||
RecordWriter<ImmutableBytesWritable, V> tableWriter = tableWriters.get(tableName);
|
||||
// if there is new table, verify that table directory exists
|
||||
if (tableWriter == null) {
|
||||
// using table name as directory name
|
||||
final Path tableOutputDir = new Path(outputDir, Bytes.toString(tableName.copyBytes()));
|
||||
fs.mkdirs(tableOutputDir);
|
||||
LOG.info("Writing Table '" + tableName.toString() + "' data into following directory"
|
||||
+ tableOutputDir.toString());
|
||||
|
||||
// Create writer for one specific table
|
||||
tableWriter = new HFileOutputFormat2.HFileRecordWriter<V>(context, tableOutputDir);
|
||||
// Put table into map
|
||||
tableWriters.put(tableName, tableWriter);
|
||||
}
|
||||
// Write <Row, Cell> into tableWriter
|
||||
// in the original code, it does not use Row
|
||||
tableWriter.write(null, cell);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void close(TaskAttemptContext c) throws IOException, InterruptedException {
|
||||
for (RecordWriter<ImmutableBytesWritable, V> writer : tableWriters.values()) {
|
||||
writer.close(c);
|
||||
}
|
||||
}
|
||||
};
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,224 @@
|
|||
/**
|
||||
* Licensed to the Apache Software Foundation (ASF) under one or more contributor license
|
||||
* agreements. See the NOTICE file distributed with this work for additional information regarding
|
||||
* copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the
|
||||
* "License"); you may not use this file except in compliance with the License. You may obtain a
|
||||
* copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable
|
||||
* law or agreed to in writing, software distributed under the License is distributed on an "AS IS"
|
||||
* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License
|
||||
* for the specific language governing permissions and limitations under the License.
|
||||
*/
|
||||
package org.apache.hadoop.hbase.mapreduce;
|
||||
|
||||
import static org.junit.Assert.assertTrue;
|
||||
|
||||
import java.io.FileNotFoundException;
|
||||
import java.io.IOException;
|
||||
import java.util.ArrayList;
|
||||
import java.util.Random;
|
||||
import java.util.TreeSet;
|
||||
|
||||
import org.apache.commons.logging.Log;
|
||||
import org.apache.commons.logging.LogFactory;
|
||||
import org.apache.hadoop.conf.Configuration;
|
||||
import org.apache.hadoop.fs.FileStatus;
|
||||
import org.apache.hadoop.fs.FileSystem;
|
||||
import org.apache.hadoop.fs.Path;
|
||||
import org.apache.hadoop.hbase.*;
|
||||
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
|
||||
import org.apache.hadoop.hbase.io.hfile.HFile;
|
||||
import org.apache.hadoop.hbase.testclassification.MediumTests;
|
||||
import org.apache.hadoop.hbase.util.Bytes;
|
||||
import org.apache.hadoop.io.NullWritable;
|
||||
import org.apache.hadoop.mapred.FileOutputCommitter;
|
||||
import org.apache.hadoop.mapreduce.Job;
|
||||
import org.apache.hadoop.mapreduce.Mapper;
|
||||
import org.apache.hadoop.mapreduce.Reducer;
|
||||
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
|
||||
import org.junit.Test;
|
||||
import org.junit.experimental.categories.Category;
|
||||
|
||||
/**
|
||||
* Test for{@link MultiHFileOutputFormat}. Sets up and runs a mapreduce job that output directories and
|
||||
* writes hfiles.
|
||||
*/
|
||||
@Category(MediumTests.class)
|
||||
public class TestMultiHFileOutputFormat {
|
||||
private static final Log LOG = LogFactory.getLog(TestMultiHFileOutputFormat.class);
|
||||
|
||||
private HBaseTestingUtility util = new HBaseTestingUtility();
|
||||
|
||||
private static int ROWSPERSPLIT = 10;
|
||||
|
||||
private static final int KEYLEN_DEFAULT = 10;
|
||||
private static final String KEYLEN_CONF = "randomkv.key.length";
|
||||
|
||||
private static final int VALLEN_DEFAULT = 10;
|
||||
private static final String VALLEN_CONF = "randomkv.val.length";
|
||||
|
||||
private static final byte[][] TABLES =
|
||||
{ Bytes.add(Bytes.toBytes(PerformanceEvaluation.TABLE_NAME), Bytes.toBytes("-1")),
|
||||
Bytes.add(Bytes.toBytes(PerformanceEvaluation.TABLE_NAME), Bytes.toBytes("-2")) };
|
||||
|
||||
private static final byte[][] FAMILIES =
|
||||
{ Bytes.add(PerformanceEvaluation.FAMILY_NAME, Bytes.toBytes("-A")),
|
||||
Bytes.add(PerformanceEvaluation.FAMILY_NAME, Bytes.toBytes("-B")) };
|
||||
|
||||
private static final byte[] QUALIFIER = Bytes.toBytes("data");
|
||||
|
||||
public static void main(String[] args) throws Exception {
|
||||
new TestMultiHFileOutputFormat().testWritingDataIntoHFiles();
|
||||
}
|
||||
|
||||
/**
|
||||
* Run small MR job. this MR job will write HFile into
|
||||
* testWritingDataIntoHFiles/tableNames/columFamilies/
|
||||
*/
|
||||
@Test
|
||||
public void testWritingDataIntoHFiles() throws Exception {
|
||||
Configuration conf = util.getConfiguration();
|
||||
util.startMiniCluster();
|
||||
Path testDir = util.getDataTestDirOnTestFS("testWritingDataIntoHFiles");
|
||||
FileSystem fs = testDir.getFileSystem(conf);
|
||||
LOG.info("testWritingDataIntoHFiles dir writing to dir: " + testDir);
|
||||
|
||||
// Set down this value or we OOME in eclipse.
|
||||
conf.setInt("mapreduce.task.io.sort.mb", 20);
|
||||
// Write a few files by setting max file size.
|
||||
conf.setLong(HConstants.HREGION_MAX_FILESIZE, 64 * 1024);
|
||||
|
||||
try {
|
||||
Job job = Job.getInstance(conf, "testWritingDataIntoHFiles");
|
||||
|
||||
FileOutputFormat.setOutputPath(job, testDir);
|
||||
|
||||
job.setInputFormatClass(NMapInputFormat.class);
|
||||
job.setMapperClass(Random_TableKV_GeneratingMapper.class);
|
||||
job.setMapOutputKeyClass(ImmutableBytesWritable.class);
|
||||
job.setMapOutputValueClass(KeyValue.class);
|
||||
job.setReducerClass(Table_KeyValueSortReducer.class);
|
||||
job.setOutputFormatClass(MultiHFileOutputFormat.class);
|
||||
job.getConfiguration().setStrings("io.serializations", conf.get("io.serializations"),
|
||||
MutationSerialization.class.getName(), ResultSerialization.class.getName(),
|
||||
KeyValueSerialization.class.getName());
|
||||
|
||||
TableMapReduceUtil.addDependencyJars(job);
|
||||
TableMapReduceUtil.initCredentials(job);
|
||||
LOG.info("\nStarting test testWritingDataIntoHFiles\n");
|
||||
assertTrue(job.waitForCompletion(true));
|
||||
LOG.info("\nWaiting on checking MapReduce output\n");
|
||||
assertTrue(checkMROutput(fs, testDir, 0));
|
||||
} finally {
|
||||
testDir.getFileSystem(conf).delete(testDir, true);
|
||||
util.shutdownMiniCluster();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* MR will output a 3 level directory, tableName->ColumnFamilyName->HFile this method to check the
|
||||
* created directory is correct or not A recursion method, the testDir had better be small size
|
||||
*/
|
||||
private boolean checkMROutput(FileSystem fs, Path testDir, int level)
|
||||
throws FileNotFoundException, IOException {
|
||||
if (level >= 3) {
|
||||
return HFile.isHFileFormat(fs, testDir);
|
||||
}
|
||||
FileStatus[] fStats = fs.listStatus(testDir);
|
||||
if (fStats == null || fStats.length <= 0) {
|
||||
LOG.info("Created directory format is not correct");
|
||||
return false;
|
||||
}
|
||||
|
||||
for (FileStatus stats : fStats) {
|
||||
// skip the _SUCCESS file created by MapReduce
|
||||
if (level == 0 && stats.getPath().getName().endsWith(FileOutputCommitter.SUCCEEDED_FILE_NAME))
|
||||
continue;
|
||||
if (level < 2 && !stats.isDirectory()) {
|
||||
LOG.info("Created directory format is not correct");
|
||||
return false;
|
||||
}
|
||||
boolean flag = checkMROutput(fs, stats.getPath(), level + 1);
|
||||
if (flag == false) return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Simple mapper that makes <TableName, KeyValue> output. With no input data
|
||||
*/
|
||||
static class Random_TableKV_GeneratingMapper
|
||||
extends Mapper<NullWritable, NullWritable, ImmutableBytesWritable, Cell> {
|
||||
|
||||
private int keyLength;
|
||||
private int valLength;
|
||||
|
||||
@Override
|
||||
protected void setup(Context context) throws IOException, InterruptedException {
|
||||
super.setup(context);
|
||||
|
||||
Configuration conf = context.getConfiguration();
|
||||
keyLength = conf.getInt(KEYLEN_CONF, KEYLEN_DEFAULT);
|
||||
valLength = conf.getInt(VALLEN_CONF, VALLEN_DEFAULT);
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void map(NullWritable n1, NullWritable n2,
|
||||
Mapper<NullWritable, NullWritable, ImmutableBytesWritable, Cell>.Context context)
|
||||
throws java.io.IOException, InterruptedException {
|
||||
|
||||
byte keyBytes[] = new byte[keyLength];
|
||||
byte valBytes[] = new byte[valLength];
|
||||
|
||||
ArrayList<ImmutableBytesWritable> tables = new ArrayList<ImmutableBytesWritable>();
|
||||
for (int i = 0; i < TABLES.length; i++) {
|
||||
tables.add(new ImmutableBytesWritable(TABLES[i]));
|
||||
}
|
||||
|
||||
int taskId = context.getTaskAttemptID().getTaskID().getId();
|
||||
assert taskId < Byte.MAX_VALUE : "Unit tests dont support > 127 tasks!";
|
||||
Random random = new Random();
|
||||
|
||||
for (int i = 0; i < ROWSPERSPLIT; i++) {
|
||||
random.nextBytes(keyBytes);
|
||||
// Ensure that unique tasks generate unique keys
|
||||
keyBytes[keyLength - 1] = (byte) (taskId & 0xFF);
|
||||
random.nextBytes(valBytes);
|
||||
|
||||
for (ImmutableBytesWritable table : tables) {
|
||||
for (byte[] family : FAMILIES) {
|
||||
Cell kv = new KeyValue(keyBytes, family, QUALIFIER, valBytes);
|
||||
context.write(table, kv);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Simple Reducer that have input <TableName, KeyValue>, with KeyValues have no order. and output
|
||||
* <TableName, KeyValue>, with KeyValues are ordered
|
||||
*/
|
||||
|
||||
static class Table_KeyValueSortReducer
|
||||
extends Reducer<ImmutableBytesWritable, KeyValue, ImmutableBytesWritable, KeyValue> {
|
||||
protected void reduce(ImmutableBytesWritable table, java.lang.Iterable<KeyValue> kvs,
|
||||
org.apache.hadoop.mapreduce.Reducer<ImmutableBytesWritable, KeyValue, ImmutableBytesWritable, KeyValue>.Context context)
|
||||
throws java.io.IOException, InterruptedException {
|
||||
TreeSet<KeyValue> map = new TreeSet<KeyValue>(KeyValue.COMPARATOR);
|
||||
for (KeyValue kv : kvs) {
|
||||
try {
|
||||
map.add(kv.clone());
|
||||
} catch (CloneNotSupportedException e) {
|
||||
throw new java.io.IOException(e);
|
||||
}
|
||||
}
|
||||
context.setStatus("Read " + map.getClass());
|
||||
int index = 0;
|
||||
for (KeyValue kv : map) {
|
||||
context.write(table, kv);
|
||||
if (++index % 100 == 0) context.setStatus("Wrote " + index);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue