Examples with LookupTask org.apache.accumulo.tserver.scan.LookupTask used on opensource projects

Example 1 with LookupTask

use of org.apache.accumulo.tserver.scan.LookupTask in project accumulo by apache.

the class ThriftClientHandler method continueMultiScan.

private MultiScanResult continueMultiScan(long scanID, MultiScanSession session) throws TSampleNotPresentException {
    if (session.lookupTask == null) {
        session.lookupTask = new LookupTask(server, scanID);
        server.resourceManager.executeReadAhead(session.threadPoolExtent, getScanDispatcher(session.threadPoolExtent), session, session.lookupTask);
    }
    try {
        MultiScanResult scanResult = session.lookupTask.get(MAX_TIME_TO_WAIT_FOR_SCAN_RESULT_MILLIS, TimeUnit.MILLISECONDS);
        session.lookupTask = null;
        return scanResult;
    } catch (ExecutionException e) {
        server.sessionManager.removeSession(scanID);
        if (e.getCause() instanceof SampleNotPresentException) {
            throw new TSampleNotPresentException();
        } else {
            log.warn("Failed to get multiscan result", e);
            throw new RuntimeException(e);
        }
    } catch (TimeoutException e1) {
        long timeout = server.getConfiguration().getTimeInMillis(Property.TSERV_CLIENT_TIMEOUT);
        server.sessionManager.removeIfNotAccessed(scanID, timeout);
        List<TKeyValue> results = Collections.emptyList();
        Map<TKeyExtent, List<TRange>> failures = Collections.emptyMap();
        List<TKeyExtent> fullScans = Collections.emptyList();
        return new MultiScanResult(results, failures, fullScans, null, null, false, true);
    } catch (Exception t) {
        server.sessionManager.removeSession(scanID);
        log.warn("Failed to get multiscan result", t);
        throw new RuntimeException(t);
    }
}