import org.apache.hadoop.hbase.regionserver.metrics.SchemaConfigured; //导入依赖的package包/类
public StoreFile.Writer createWriterInTmp(int maxKeyCount,
  Compression.Algorithm compression, boolean isCompaction, boolean includeMVCCReadpoint)
throws IOException {
  final CacheConfig writerCacheConf;
  if (isCompaction) {
    // Don't cache data on write on compactions.
    writerCacheConf = new CacheConfig(cacheConf);
    writerCacheConf.setCacheDataOnWrite(false);
  } else {
    writerCacheConf = cacheConf;
  }
  StoreFile.Writer w = new StoreFile.WriterBuilder(conf, writerCacheConf,
      fs, blocksize)
          .withOutputDir(region.getTmpDir())
          .withDataBlockEncoder(dataBlockEncoder)
          .withComparator(comparator)
          .withBloomType(family.getBloomFilterType())
          .withMaxKeyCount(maxKeyCount)
          .withChecksumType(checksumType)
          .withBytesPerChecksum(bytesPerChecksum)
          .withCompression(compression)
          .includeMVCCReadpoint(includeMVCCReadpoint)
          .build();
  // The store file writer's path does not include the CF name, so we need
  // to configure the HFile writer directly.
  SchemaConfigured sc = (SchemaConfigured) w.writer;
  SchemaConfigured.resetSchemaMetricsConf(sc);
  passSchemaMetricsTo(sc);
  return w;
}
 

import org.apache.hadoop.hbase.regionserver.metrics.SchemaConfigured; //导入依赖的package包/类
@Override
public void schemaConfigurationChanged() {
  passSchemaMetricsTo((SchemaConfigured) reader);
}