本文整理匯總了Java中org.apache.hadoop.hbase.HColumnDescriptor.getTimeToLive方法的典型用法代碼示例。如果您正苦於以下問題：Java HColumnDescriptor.getTimeToLive方法的具體用法？Java HColumnDescriptor.getTimeToLive怎麽用？Java HColumnDescriptor.getTimeToLive使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類org.apache.hadoop.hbase.HColumnDescriptor的用法示例。
在下文中一共展示了HColumnDescriptor.getTimeToLive方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: determineTTLFromFamily
import org.apache.hadoop.hbase.HColumnDescriptor; //導入方法依賴的package包/類
/**
* @param family
* @return TTL in seconds of the specified family
*/
private static long determineTTLFromFamily(final HColumnDescriptor family) {
// HCD.getTimeToLive returns ttl in seconds. Convert to milliseconds.
long ttl = family.getTimeToLive();
if (ttl == HConstants.FOREVER) {
// Default is unlimited ttl.
ttl = Long.MAX_VALUE;
} else if (ttl == -1) {
ttl = Long.MAX_VALUE;
} else {
// Second -> ms adjust for user data
ttl *= 1000;
}
return ttl;
}
示例2: checkCompactionPolicy
import org.apache.hadoop.hbase.HColumnDescriptor; //導入方法依賴的package包/類
private void checkCompactionPolicy(Configuration conf, HTableDescriptor htd)
throws IOException {
// FIFO compaction has some requirements
// Actually FCP ignores periodic major compactions
String className =
htd.getConfigurationValue(DefaultStoreEngine.DEFAULT_COMPACTION_POLICY_CLASS_KEY);
if (className == null) {
className =
conf.get(DefaultStoreEngine.DEFAULT_COMPACTION_POLICY_CLASS_KEY,
ExploringCompactionPolicy.class.getName());
}
int blockingFileCount = HStore.DEFAULT_BLOCKING_STOREFILE_COUNT;
String sv = htd.getConfigurationValue(HStore.BLOCKING_STOREFILES_KEY);
if (sv != null) {
blockingFileCount = Integer.parseInt(sv);
} else {
blockingFileCount = conf.getInt(HStore.BLOCKING_STOREFILES_KEY, blockingFileCount);
}
for (HColumnDescriptor hcd : htd.getColumnFamilies()) {
String compactionPolicy =
hcd.getConfigurationValue(DefaultStoreEngine.DEFAULT_COMPACTION_POLICY_CLASS_KEY);
if (compactionPolicy == null) {
compactionPolicy = className;
}
if (!compactionPolicy.equals(FIFOCompactionPolicy.class.getName())) {
continue;
}
// FIFOCompaction
String message = null;
// 1. Check TTL
if (hcd.getTimeToLive() == HColumnDescriptor.DEFAULT_TTL) {
message = "Default TTL is not supported for FIFO compaction";
throw new IOException(message);
}
// 2. Check min versions
if (hcd.getMinVersions() > 0) {
message = "MIN_VERSION > 0 is not supported for FIFO compaction";
throw new IOException(message);
}
// 3. blocking file count
String sbfc = htd.getConfigurationValue(HStore.BLOCKING_STOREFILES_KEY);
if (sbfc != null) {
blockingFileCount = Integer.parseInt(sbfc);
}
if (blockingFileCount < 1000) {
message =
"blocking file count '" + HStore.BLOCKING_STOREFILES_KEY + "' " + blockingFileCount
+ " is below recommended minimum of 1000";
throw new IOException(message);
}
}
}