Java StorageException类代码示例

import org.apache.kylin.common.persistence.StorageException; //导入依赖的package包/类
public CubeSegmentTupleIterator(CubeSegment cubeSeg, Collection<HBaseKeyRange> keyRanges, HConnection conn, Collection<TblColRef> dimensions, TupleFilter filter, Collection<TblColRef> groupBy, Collection<RowValueDecoder> rowValueDecoders, StorageContext context) {
    this.cube = cubeSeg.getCubeInstance();
    this.cubeSeg = cubeSeg;
    this.dimensions = dimensions;
    this.filter = filter;
    this.groupBy = groupBy;
    this.rowValueDecoders = rowValueDecoders;
    this.context = context;
    this.tableName = cubeSeg.getStorageLocationIdentifier();
    this.rowKeyDecoder = new RowKeyDecoder(this.cubeSeg);
    this.scanCount = 0;

    try {
        this.table = conn.getTable(tableName);
    } catch (Throwable t) {
        throw new StorageException("Error when open connection to table " + tableName, t);
    }
    this.rangeIterator = keyRanges.iterator();
    scanNextRange();
}
 

import org.apache.kylin.common.persistence.StorageException; //导入依赖的package包/类
private void closeScanner() {
    if (logger.isDebugEnabled() && scan != null) {
        logger.debug("Scan " + scan.toString());
        byte[] metricsBytes = scan.getAttribute(Scan.SCAN_ATTRIBUTES_METRICS_DATA);
        if (metricsBytes != null) {
            ScanMetrics scanMetrics = ProtobufUtil.toScanMetrics(metricsBytes);
            logger.debug("HBase Metrics: " + "count={}, ms={}, bytes={}, remote_bytes={}, regions={}, not_serving_region={}, rpc={}, rpc_retries={}, remote_rpc={}, remote_rpc_retries={}", new Object[] { scanCount, scanMetrics.sumOfMillisSecBetweenNexts, scanMetrics.countOfBytesInResults, scanMetrics.countOfBytesInRemoteResults, scanMetrics.countOfRegions, scanMetrics.countOfNSRE, scanMetrics.countOfRPCcalls, scanMetrics.countOfRPCRetries, scanMetrics.countOfRemoteRPCcalls, scanMetrics.countOfRemoteRPCRetries });
        }
    }
    try {
        if (scanner != null) {
            scanner.close();
            scanner = null;
        }
    } catch (Throwable t) {
        throw new StorageException("Error when close scanner for table " + tableName, t);
    }
}
 

import org.apache.kylin.common.persistence.StorageException; //导入依赖的package包/类
private final Iterator<Result> doScan(HBaseKeyRange keyRange) {

        Iterator<Result> iter = null;
        try {
            scan = buildScan(keyRange);
            applyFuzzyFilter(scan, keyRange);
            logScan(keyRange);

            scanner = ObserverEnabler.scanWithCoprocessorIfBeneficial(cubeSeg, keyRange.getCuboid(), filter, groupBy, rowValueDecoders, context, table, scan);

            iter = scanner.iterator();
        } catch (Throwable t) {
            String msg = MessageFormat.format("Error when scan from lower key {1} to upper key {2} on table {0}.", tableName, Bytes.toString(keyRange.getStartKey()), Bytes.toString(keyRange.getStopKey()));
            throw new StorageException(msg, t);
        }
        return iter;
    }
 

import org.apache.kylin.common.persistence.StorageException; //导入依赖的package包/类
@SuppressWarnings("resource")
public static Connection get(StorageURL url) {
    // find configuration
    Configuration conf = configCache.get(url);
    if (conf == null) {
        conf = newHBaseConfiguration(url);
        configCache.put(url, conf);
    }

    Connection connection = connPool.get(url);
    try {
        while (true) {
            // I don't use DCL since recreate a connection is not a big issue.
            if (connection == null || connection.isClosed()) {
                logger.info("connection is null or closed, creating a new one");
                connection = ConnectionFactory.createConnection(conf);
                connPool.put(url, connection);
            }

            if (connection == null || connection.isClosed()) {
                Thread.sleep(10000);// wait a while and retry
            } else {
                break;
            }
        }

    } catch (Throwable t) {
        logger.error("Error when open connection " + url, t);
        throw new StorageException("Error when open connection " + url, t);
    }

    return connection;
}
 

import org.apache.kylin.common.persistence.StorageException; //导入依赖的package包/类
private void closeTable() {
    try {
        if (table != null) {
            table.close();
        }
    } catch (Throwable t) {
        throw new StorageException("Error when close table " + tableName, t);
    }
}