Examples of org.apache.hadoop.hbase.io.BatchUpdate

org.apache.hadoop.hbase.io.BatchUpdate
A Writable object that contains a series of BatchOperations There is one BatchUpdate object per server, so a series of batch operations can result in multiple BatchUpdate objects if the batch contains rows that are served by multiple region servers.


    long transaction1Id = 1;
    long transaction2Id = 2;
    logMangaer.writeStartToLog(transaction1Id);


    BatchUpdate update1 = new BatchUpdate(row1);
    update1.put(col, val1);
    logMangaer.writeUpdateToLog(transaction1Id, update1);


    logMangaer.writeStartToLog(transaction2Id);
    
    BatchUpdate update2 = new BatchUpdate(row2);
    update2.put(col, val2);
    logMangaer.writeUpdateToLog(transaction2Id, update2);


    BatchUpdate update3 = new BatchUpdate(row3);
    update3.put(col, val3);
    logMangaer.writeUpdateToLog(transaction1Id, update3);


    logMangaer.writeCommitToLog(transaction2Id);
    logMangaer.writeCommitToLog(transaction1Id);

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    long transaction1Id = 1;
    long transaction2Id = 2;
    logMangaer.writeStartToLog(transaction1Id);


    BatchUpdate update1 = new BatchUpdate(row1);
    update1.put(col, val1);
    logMangaer.writeUpdateToLog(transaction1Id, update1);


    logMangaer.writeStartToLog(transaction2Id);
    
    BatchUpdate update2 = new BatchUpdate(row2);
    update2.put(col, val2);
    logMangaer.writeUpdateToLog(transaction2Id, update2);


    logMangaer.writeAbortToLog(transaction2Id);
    
    BatchUpdate update3 = new BatchUpdate(row3);
    update3.put(col, val3);
    logMangaer.writeUpdateToLog(transaction1Id, update3);


    logMangaer.writeCommitToLog(transaction1Id);


    // log.completeCacheFlush(regionName, tableName, logSeqId);

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    long transaction1Id = 1;
    long transaction2Id = 2;
    logMangaer.writeStartToLog(transaction1Id);


    BatchUpdate update1 = new BatchUpdate(row1);
    update1.put(col, val1);
    logMangaer.writeUpdateToLog(transaction1Id, update1);


    logMangaer.writeStartToLog(transaction2Id);
    
    BatchUpdate update2 = new BatchUpdate(row2);
    update2.put(col, val2);
    logMangaer.writeUpdateToLog(transaction2Id, update2);


    logMangaer.writeCommitToLog(transaction2Id);
    
    BatchUpdate update3 = new BatchUpdate(row3);
    update3.put(col, val3);
    logMangaer.writeUpdateToLog(transaction1Id, update3);


    logMangaer.writeAbortToLog(transaction1Id);


    // log.completeCacheFlush(regionName, tableName, logSeqId);

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        admin.createTable(tabledesc);
        
        // put some data into table
        HTable table = new HTable(conf, TESTTABLE);
        
        BatchUpdate batchUpdate;
        
        for(int i = 0 ; i < TEST_ROW_COUNT ; i++) {
            String v = Integer.toString(i);
            batchUpdate = new BatchUpdate(Bytes.toBytes(
                "00".substring(v.length()) + v));
            batchUpdate.put(TESTCOLUMN_A, Bytes.toBytes(v));
            batchUpdate.put(TESTCOLUMN_B, Bytes.toBytes(v));
            batchUpdate.put(TESTCOLUMN_C, Bytes.toBytes("TEXT" + i));
            table.commit(batchUpdate);
        }
    }

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      // 3. Insert into meta
          
      HRegionInfo info = region.getRegionInfo();
      Text regionName = region.getRegionName();
      BatchUpdate b = new BatchUpdate(rand.nextLong());
      long lockid = b.startUpdate(regionName);
      b.put(lockid, COL_REGIONINFO, Writables.getBytes(info));
      server.batchUpdate(metaRegionName, b);


      // 4. Close the new region to flush it to disk.  Close its log file too.
      
      region.close();

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      if (LOG.isDebugEnabled()) {
        LOG.debug(split.getRegionName().toString()
            +" no longer has references to " + parent.toString());
      }
      
      BatchUpdate b = new BatchUpdate(rand.nextLong());
      long lockid = b.startUpdate(parent);
      b.delete(lockid, splitColumn);
      srvr.batchUpdate(metaRegionName, b);
        
      return result;
    }

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        LOG.info("updating row " + regionInfo.getRegionName() + " in table " +
          metaRegionName + " with startcode " +
          Writables.bytesToLong(this.startCode) + " and server "+
          serverAddress.toString());
        try {
          BatchUpdate b = new BatchUpdate(rand.nextLong());
          long lockid = b.startUpdate(regionInfo.getRegionName());
          b.put(lockid, COL_SERVER,
            Writables.stringToBytes(serverAddress.toString()));
          b.put(lockid, COL_STARTCODE, startCode);
          server.batchUpdate(metaRegionName, b);
          if (isMetaTable) {
            // It's a meta region.
            MetaRegion m = new MetaRegion(this.serverAddress,
              this.regionInfo.getRegionName(), this.regionInfo.getStartKey());

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        if (LOG.isDebugEnabled()) {
          LOG.debug("updating columns in row: " + i.getRegionName());
        }


        BatchUpdate b = new BatchUpdate(rand.nextLong());
        lockid = b.startUpdate(i.getRegionName());
        updateRegionInfo(b, i);
        b.delete(lockid, COL_SERVER);
        b.delete(lockid, COL_STARTCODE);
        server.batchUpdate(m.getRegionName(), b);
        if (LOG.isDebugEnabled()) {
          LOG.debug("updated columns in row: " + i.getRegionName());
        }

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        if (LOG.isDebugEnabled()) {
          LOG.debug("updating columns in row: " + i.getRegionName());
        }


        BatchUpdate b = new BatchUpdate(rand.nextLong());
        long lockid = b.startUpdate(i.getRegionName());
        updateRegionInfo(lockid, b, i);
        server.batchUpdate(m.getRegionName(), b);
        if (LOG.isDebugEnabled()) {
          LOG.debug("updated columns in row: " + i.getRegionName());
        }

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    }


    protected void updateRegionInfo(HRegionInterface server, Text regionName,
        HRegionInfo i) throws IOException {


      BatchUpdate b = new BatchUpdate(rand.nextLong());
      long lockid = b.startUpdate(i.getRegionName());
      b.put(lockid, COL_REGIONINFO, Writables.getBytes(i));
      server.batchUpdate(regionName, b);
      if (LOG.isDebugEnabled()) {
        LOG.debug("updated columns in row: " + i.getRegionName());
      }
    }

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