本文整理汇总了Java中org.apache.hadoop.hbase.regionserver.HRegion.compact方法的典型用法代码示例。如果您正苦于以下问题：Java HRegion.compact方法的具体用法？Java HRegion.compact怎么用？Java HRegion.compact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.regionserver.HRegion的用法示例。
在下文中一共展示了HRegion.compact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: testScannerSelection
import org.apache.hadoop.hbase.regionserver.HRegion; //导入方法依赖的package包/类
@Test
public void testScannerSelection() throws IOException {
Configuration conf = TEST_UTIL.getConfiguration();
conf.setBoolean("hbase.store.delete.expired.storefile", false);
HColumnDescriptor hcd =
new HColumnDescriptor(FAMILY_BYTES)
.setMaxVersions(Integer.MAX_VALUE)
.setTimeToLive(TTL_SECONDS);
HTableDescriptor htd = new HTableDescriptor(TABLE);
htd.addFamily(hcd);
HRegionInfo info = new HRegionInfo(TABLE);
HRegion region =
HRegion.createHRegion(info, TEST_UTIL.getDataTestDir(info.getEncodedName()),
conf, htd);
long ts = EnvironmentEdgeManager.currentTime();
long version = 0; //make sure each new set of Put's have a new ts
for (int iFile = 0; iFile < totalNumFiles; ++iFile) {
if (iFile == NUM_EXPIRED_FILES) {
Threads.sleepWithoutInterrupt(TTL_MS);
version += TTL_MS;
}
for (int iRow = 0; iRow < NUM_ROWS; ++iRow) {
Put put = new Put(Bytes.toBytes("row" + iRow));
for (int iCol = 0; iCol < NUM_COLS_PER_ROW; ++iCol) {
put.add(FAMILY_BYTES, Bytes.toBytes("col" + iCol),
ts + version, Bytes.toBytes("value" + iFile + "_" + iRow + "_" + iCol));
}
region.put(put);
}
region.flush(true);
version++;
}
Scan scan = new Scan();
scan.setMaxVersions(Integer.MAX_VALUE);
CacheConfig cacheConf = new CacheConfig(conf);
LruBlockCache cache = (LruBlockCache) cacheConf.getBlockCache();
cache.clearCache();
InternalScanner scanner = region.getScanner(scan);
List<Cell> results = new ArrayList<Cell>();
final int expectedKVsPerRow = numFreshFiles * NUM_COLS_PER_ROW;
int numReturnedRows = 0;
LOG.info("Scanning the entire table");
while (scanner.next(results) || results.size() > 0) {
assertEquals(expectedKVsPerRow, results.size());
++numReturnedRows;
results.clear();
}
assertEquals(NUM_ROWS, numReturnedRows);
Set<String> accessedFiles = cache.getCachedFileNamesForTest();
LOG.debug("Files accessed during scan: " + accessedFiles);
// Exercise both compaction codepaths.
if (explicitCompaction) {
HStore store = (HStore)region.getStore(FAMILY_BYTES);
store.compactRecentForTestingAssumingDefaultPolicy(totalNumFiles);
} else {
region.compact(false);
}
region.close();
}