Examples with InitialScan org.apache.accumulo.core.data.thrift.InitialScan used on opensource projects

Example 1 with InitialScan

use of org.apache.accumulo.core.data.thrift.InitialScan in project accumulo by apache.

the class ThriftScanner method getBatchFromServer.

public static boolean getBatchFromServer(ClientContext context, Range range, KeyExtent extent, String server, SortedMap<Key, Value> results, SortedSet<Column> fetchedColumns, List<IterInfo> serverSideIteratorList, Map<String, Map<String, String>> serverSideIteratorOptions, int size, Authorizations authorizations, boolean retry, long batchTimeOut, String classLoaderContext) throws AccumuloException, AccumuloSecurityException, NotServingTabletException {
    if (server == null)
        throw new AccumuloException(new IOException());
    final HostAndPort parsedServer = HostAndPort.fromString(server);
    try {
        TInfo tinfo = Tracer.traceInfo();
        TabletClientService.Client client = ThriftUtil.getTServerClient(parsedServer, context);
        try {
            // not reading whole rows (or stopping on row boundries) so there is no need to enable isolation below
            ScanState scanState = new ScanState(context, extent.getTableId(), authorizations, range, fetchedColumns, size, serverSideIteratorList, serverSideIteratorOptions, false, Constants.SCANNER_DEFAULT_READAHEAD_THRESHOLD, null, batchTimeOut, classLoaderContext);
            TabletType ttype = TabletType.type(extent);
            boolean waitForWrites = !serversWaitedForWrites.get(ttype).contains(server);
            InitialScan isr = client.startScan(tinfo, scanState.context.rpcCreds(), extent.toThrift(), scanState.range.toThrift(), Translator.translate(scanState.columns, Translators.CT), scanState.size, scanState.serverSideIteratorList, scanState.serverSideIteratorOptions, scanState.authorizations.getAuthorizationsBB(), waitForWrites, scanState.isolated, scanState.readaheadThreshold, null, scanState.batchTimeOut, classLoaderContext);
            if (waitForWrites)
                serversWaitedForWrites.get(ttype).add(server);
            Key.decompress(isr.result.results);
            for (TKeyValue kv : isr.result.results) results.put(new Key(kv.key), new Value(kv.value));
            client.closeScan(tinfo, isr.scanID);
            return isr.result.more;
        } finally {
            ThriftUtil.returnClient(client);
        }
    } catch (TApplicationException tae) {
        throw new AccumuloServerException(server, tae);
    } catch (TooManyFilesException e) {
        log.debug("Tablet ({}) has too many files {} : {}", extent, server, e.getMessage());
    } catch (ThriftSecurityException e) {
        log.warn("Security Violation in scan request to {}: {}", server, e.getMessage());
        throw new AccumuloSecurityException(e.user, e.code, e);
    } catch (TException e) {
        log.debug("Error getting transport to {}: {}", server, e.getMessage());
    }
    throw new AccumuloException("getBatchFromServer: failed");
}

Example 2 with InitialScan

use of org.apache.accumulo.core.data.thrift.InitialScan in project accumulo by apache.

the class ThriftScanner method scan.

private static List<KeyValue> scan(TabletLocation loc, ScanState scanState, ClientContext context) throws AccumuloSecurityException, NotServingTabletException, TException, NoSuchScanIDException, TooManyFilesException, TSampleNotPresentException {
    if (scanState.finished)
        return null;
    OpTimer timer = null;
    final TInfo tinfo = Tracer.traceInfo();
    final HostAndPort parsedLocation = HostAndPort.fromString(loc.tablet_location);
    TabletClientService.Client client = ThriftUtil.getTServerClient(parsedLocation, context);
    String old = Thread.currentThread().getName();
    try {
        ScanResult sr;
        if (scanState.prevLoc != null && !scanState.prevLoc.equals(loc))
            scanState.scanID = null;
        scanState.prevLoc = loc;
        if (scanState.scanID == null) {
            Thread.currentThread().setName("Starting scan tserver=" + loc.tablet_location + " tableId=" + loc.tablet_extent.getTableId());
            if (log.isTraceEnabled()) {
                String msg = "Starting scan tserver=" + loc.tablet_location + " tablet=" + loc.tablet_extent + " range=" + scanState.range + " ssil=" + scanState.serverSideIteratorList + " ssio=" + scanState.serverSideIteratorOptions + " context=" + scanState.classLoaderContext;
                log.trace("tid={} {}", Thread.currentThread().getId(), msg);
                timer = new OpTimer().start();
            }
            TabletType ttype = TabletType.type(loc.tablet_extent);
            boolean waitForWrites = !serversWaitedForWrites.get(ttype).contains(loc.tablet_location);
            InitialScan is = client.startScan(tinfo, scanState.context.rpcCreds(), loc.tablet_extent.toThrift(), scanState.range.toThrift(), Translator.translate(scanState.columns, Translators.CT), scanState.size, scanState.serverSideIteratorList, scanState.serverSideIteratorOptions, scanState.authorizations.getAuthorizationsBB(), waitForWrites, scanState.isolated, scanState.readaheadThreshold, SamplerConfigurationImpl.toThrift(scanState.samplerConfig), scanState.batchTimeOut, scanState.classLoaderContext);
            if (waitForWrites)
                serversWaitedForWrites.get(ttype).add(loc.tablet_location);
            sr = is.result;
            if (sr.more)
                scanState.scanID = is.scanID;
            else
                client.closeScan(tinfo, is.scanID);
        } else {
            // log.debug("Calling continue scan : "+scanState.range+" loc = "+loc);
            String msg = "Continuing scan tserver=" + loc.tablet_location + " scanid=" + scanState.scanID;
            Thread.currentThread().setName(msg);
            if (log.isTraceEnabled()) {
                log.trace("tid={} {}", Thread.currentThread().getId(), msg);
                timer = new OpTimer().start();
            }
            sr = client.continueScan(tinfo, scanState.scanID);
            if (!sr.more) {
                client.closeScan(tinfo, scanState.scanID);
                scanState.scanID = null;
            }
        }
        if (!sr.more) {
            // log.debug("No more : tab end row = "+loc.tablet_extent.getEndRow()+" range = "+scanState.range);
            if (loc.tablet_extent.getEndRow() == null) {
                scanState.finished = true;
                if (timer != null) {
                    timer.stop();
                    log.trace("tid={} Completely finished scan in {} #results={}", Thread.currentThread().getId(), String.format("%.3f secs", timer.scale(TimeUnit.SECONDS)), sr.results.size());
                }
            } else if (scanState.range.getEndKey() == null || !scanState.range.afterEndKey(new Key(loc.tablet_extent.getEndRow()).followingKey(PartialKey.ROW))) {
                scanState.startRow = loc.tablet_extent.getEndRow();
                scanState.skipStartRow = true;
                if (timer != null) {
                    timer.stop();
                    log.trace("tid={} Finished scanning tablet in {} #results={}", Thread.currentThread().getId(), String.format("%.3f secs", timer.scale(TimeUnit.SECONDS)), sr.results.size());
                }
            } else {
                scanState.finished = true;
                if (timer != null) {
                    timer.stop();
                    log.trace("tid={} Completely finished in {} #results={}", Thread.currentThread().getId(), String.format("%.3f secs", timer.scale(TimeUnit.SECONDS)), sr.results.size());
                }
            }
        } else {
            if (timer != null) {
                timer.stop();
                log.trace("tid={} Finished scan in {} #results={} scanid={}", Thread.currentThread().getId(), String.format("%.3f secs", timer.scale(TimeUnit.SECONDS)), sr.results.size(), scanState.scanID);
            }
        }
        Key.decompress(sr.results);
        if (sr.results.size() > 0 && !scanState.finished)
            scanState.range = new Range(new Key(sr.results.get(sr.results.size() - 1).key), false, scanState.range.getEndKey(), scanState.range.isEndKeyInclusive());
        List<KeyValue> results = new ArrayList<>(sr.results.size());
        for (TKeyValue tkv : sr.results) results.add(new KeyValue(new Key(tkv.key), tkv.value));
        return results;
    } catch (ThriftSecurityException e) {
        throw new AccumuloSecurityException(e.user, e.code, e);
    } finally {
        ThriftUtil.returnClient(client);
        Thread.currentThread().setName(old);
    }
}