本文整理汇总了Java中org.apache.hadoop.hbase.client.Scan.isSmall方法的典型用法代码示例。如果您正苦于以下问题:Java Scan.isSmall方法的具体用法?Java Scan.isSmall怎么用?Java Scan.isSmall使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.hbase.client.Scan
的用法示例。
在下文中一共展示了Scan.isSmall方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: StoreScanner
import org.apache.hadoop.hbase.client.Scan; //导入方法依赖的package包/类
/**
* An internal constructor.
*/
protected StoreScanner(Store store, Scan scan, final ScanInfo scanInfo,
final NavigableSet<byte[]> columns, long readPt, boolean cacheBlocks) {
this.readPt = readPt;
this.store = store;
this.cacheBlocks = cacheBlocks;
get = scan.isGetScan();
int numCol = columns == null ? 0 : columns.size();
explicitColumnQuery = numCol > 0;
this.scan = scan;
this.columns = columns;
this.now = EnvironmentEdgeManager.currentTime();
this.oldestUnexpiredTS = now - scanInfo.getTtl();
this.minVersions = scanInfo.getMinVersions();
// We look up row-column Bloom filters for multi-column queries as part of
// the seek operation. However, we also look the row-column Bloom filter
// for multi-row (non-"get") scans because this is not done in
// StoreFile.passesBloomFilter(Scan, SortedSet<byte[]>).
this.useRowColBloom = numCol > 1 || (!get && numCol == 1);
this.maxRowSize = scanInfo.getTableMaxRowSize();
this.scanUsePread = scan.isSmall() ? true : scanInfo.isUsePread();
this.cellsPerHeartbeatCheck = scanInfo.getCellsPerTimeoutCheck();
// Parallel seeking is on if the config allows and more there is more than one store file.
if (this.store != null && this.store.getStorefilesCount() > 1) {
RegionServerServices rsService = ((HStore) store).getHRegion().getRegionServerServices();
if (rsService != null && scanInfo.isParallelSeekEnabled()) {
this.parallelSeekEnabled = true;
this.executor = rsService.getExecutorService();
}
}
}