本文整理汇总了Java中org.apache.cassandra.cql3.UntypedResultSet.size方法的典型用法代码示例。如果您正苦于以下问题：Java UntypedResultSet.size方法的具体用法？Java UntypedResultSet.size怎么用？Java UntypedResultSet.size使用的例子？那么恭喜您, 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.cassandra.cql3.UntypedResultSet的用法示例。
在下文中一共展示了UntypedResultSet.size方法的3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: replayAllFailedBatches
import org.apache.cassandra.cql3.UntypedResultSet; //导入方法依赖的package包/类
private void replayAllFailedBatches() throws ExecutionException, InterruptedException
{
logger.debug("Started replayAllFailedBatches");
// rate limit is in bytes per second. Uses Double.MAX_VALUE if disabled (set to 0 in cassandra.yaml).
// max rate is scaled by the number of nodes in the cluster (same as for HHOM - see CASSANDRA-5272).
int throttleInKB = DatabaseDescriptor.getBatchlogReplayThrottleInKB() / StorageService.instance.getTokenMetadata().getAllEndpoints().size();
RateLimiter rateLimiter = RateLimiter.create(throttleInKB == 0 ? Double.MAX_VALUE : throttleInKB * 1024);
UntypedResultSet page = executeInternal(String.format("SELECT id, data, written_at, version FROM %s.%s LIMIT %d",
Keyspace.SYSTEM_KS,
SystemKeyspace.BATCHLOG_CF,
PAGE_SIZE));
while (!page.isEmpty())
{
UUID id = processBatchlogPage(page, rateLimiter);
if (page.size() < PAGE_SIZE)
break; // we've exhausted the batchlog, next query would be empty.
page = executeInternal(String.format("SELECT id, data, written_at, version FROM %s.%s WHERE token(id) > token(?) LIMIT %d",
Keyspace.SYSTEM_KS,
SystemKeyspace.BATCHLOG_CF,
PAGE_SIZE),
id);
}
cleanup();
logger.debug("Finished replayAllFailedBatches");
}
示例2: run
import org.apache.cassandra.cql3.UntypedResultSet; //导入方法依赖的package包/类
public void run()
{
UntypedResultSet res = processInternal("SELECT * FROM system." + SystemKeyspace.RANGE_XFERS_CF);
if (res.size() < 1)
{
LOG.debug("No queued ranges to transfer");
return;
}
if (!isReady())
return;
UntypedResultSet.Row row = res.iterator().next();
Date requestedAt = row.getTimestamp("requested_at");
ByteBuffer tokenBytes = row.getBytes("token_bytes");
Token token = StorageService.getPartitioner().getTokenFactory().fromByteArray(tokenBytes);
LOG.info("Initiating transfer of {} (scheduled at {})", token, requestedAt.toString());
try
{
StorageService.instance.relocateTokens(Collections.singleton(token));
}
catch (Exception e)
{
LOG.error("Error removing {}: {}", token, e);
}
finally
{
LOG.debug("Removing queued entry for transfer of {}", token);
processInternal(String.format("DELETE FROM system.%s WHERE token_bytes = '%s'",
SystemKeyspace.RANGE_XFERS_CF,
ByteBufferUtil.bytesToHex(tokenBytes)));
}
}
示例3: getNoOfHints
import org.apache.cassandra.cql3.UntypedResultSet; //导入方法依赖的package包/类
private int getNoOfHints()
{
String req = "SELECT * FROM system.%s";
UntypedResultSet resultSet = executeInternal(String.format(req, SystemKeyspace.HINTS_CF));
return resultSet.size();
}