Examples with TransactionVisibilityState org.apache.tephra.persist.TransactionVisibilityState used on opensource projects

Example 26 with TransactionVisibilityState

use of org.apache.tephra.persist.TransactionVisibilityState in project cdap by caskdata.

the class HBaseQueueRegionObserver method start.

@Override
public void start(CoprocessorEnvironment env) {
    if (env instanceof RegionCoprocessorEnvironment) {
        HTableDescriptor tableDesc = ((RegionCoprocessorEnvironment) env).getRegion().getTableDesc();
        String hTableName = tableDesc.getNameAsString();
        String prefixBytes = tableDesc.getValue(HBaseQueueAdmin.PROPERTY_PREFIX_BYTES);
        try {
            // Default to SALT_BYTES for the older salted queue implementation.
            this.prefixBytes = prefixBytes == null ? SaltedHBaseQueueStrategy.SALT_BYTES : Integer.parseInt(prefixBytes);
        } catch (NumberFormatException e) {
            // Shouldn't happen for table created by cdap.
            LOG.error("Unable to parse value of '" + HBaseQueueAdmin.PROPERTY_PREFIX_BYTES + "' property. " + "Default to " + SaltedHBaseQueueStrategy.SALT_BYTES, e);
            this.prefixBytes = SaltedHBaseQueueStrategy.SALT_BYTES;
        }
        namespaceId = HTableNameConverter.from(tableDesc).getNamespace();
        appName = HBaseQueueAdmin.getApplicationName(hTableName);
        flowName = HBaseQueueAdmin.getFlowName(hTableName);
        Configuration conf = env.getConfiguration();
        String hbaseNamespacePrefix = tableDesc.getValue(Constants.Dataset.TABLE_PREFIX);
        final String sysConfigTablePrefix = HTableNameConverter.getSysConfigTablePrefix(hbaseNamespacePrefix);
        txStateCacheSupplier = new DefaultTransactionStateCacheSupplier(sysConfigTablePrefix, conf);
        txStateCache = txStateCacheSupplier.get();
        txSnapshotSupplier = new Supplier<TransactionVisibilityState>() {

            @Override
            public TransactionVisibilityState get() {
                return txStateCache.getLatestState();
            }
        };
        String queueConfigTableId = HBaseQueueAdmin.getConfigTableName();
        configTableName = HTableNameConverter.toTableName(hbaseNamespacePrefix, TableId.from(namespaceId, queueConfigTableId));
        cConfReader = new CConfigurationReader(conf, sysConfigTablePrefix);
        configCacheSupplier = createConfigCache(env);
        configCache = configCacheSupplier.get();
    }
}

Example 27 with TransactionVisibilityState

use of org.apache.tephra.persist.TransactionVisibilityState in project cdap by caskdata.

the class HBaseQueueRegionObserver method preCompact.

@Override
public InternalScanner preCompact(ObserverContext<RegionCoprocessorEnvironment> e, Store store, InternalScanner scanner, ScanType type, CompactionRequest request) throws IOException {
    if (!e.getEnvironment().getRegion().isAvailable()) {
        return scanner;
    }
    LOG.info("preCompact, creates EvictionInternalScanner");
    TransactionVisibilityState txVisibilityState = txStateCache.getLatestState();
    reloadPruneState(e.getEnvironment());
    if (compactionState != null) {
        // Record tx state before the compaction
        compactionState.record(request, txVisibilityState);
    }
    return new EvictionInternalScanner("compaction", e.getEnvironment(), scanner, txVisibilityState);
}

Example 28 with TransactionVisibilityState

use of org.apache.tephra.persist.TransactionVisibilityState in project cdap by caskdata.

the class MessageTableRegionObserver method preCompactScannerOpen.

@Override
public InternalScanner preCompactScannerOpen(ObserverContext<RegionCoprocessorEnvironment> c, Store store, List<? extends KeyValueScanner> scanners, ScanType scanType, long earliestPutTs, InternalScanner s, CompactionRequest request) throws IOException {
    LOG.info("preCompact, filter using MessageDataFilter");
    TransactionVisibilityState txVisibilityState = txStateCache.getLatestState();
    reloadPruneState(c.getEnvironment());
    if (compactionState != null) {
        // Record tx state before the compaction
        compactionState.record(request, txVisibilityState);
    }
    Scan scan = new Scan();
    scan.setFilter(new MessageDataFilter(c.getEnvironment(), System.currentTimeMillis(), prefixLength, topicMetadataCache, txVisibilityState));
    return new LoggingInternalScanner("MessageDataFilter", "preCompact", new StoreScanner(store, store.getScanInfo(), scan, scanners, scanType, store.getSmallestReadPoint(), earliestPutTs), txVisibilityState);
}

Example 29 with TransactionVisibilityState

use of org.apache.tephra.persist.TransactionVisibilityState in project cdap by caskdata.

the class MessageTableRegionObserver method preFlushScannerOpen.

@Override
public InternalScanner preFlushScannerOpen(ObserverContext<RegionCoprocessorEnvironment> c, Store store, KeyValueScanner memstoreScanner, InternalScanner s) throws IOException {
    LOG.info("preFlush, filter using MessageDataFilter");
    TransactionVisibilityState txVisibilityState = txStateCache.getLatestState();
    Scan scan = new Scan();
    scan.setFilter(new MessageDataFilter(c.getEnvironment(), System.currentTimeMillis(), prefixLength, topicMetadataCache, txVisibilityState));
    return new LoggingInternalScanner("MessageDataFilter", "preFlush", new StoreScanner(store, store.getScanInfo(), scan, Collections.singletonList(memstoreScanner), ScanType.COMPACT_DROP_DELETES, store.getSmallestReadPoint(), HConstants.OLDEST_TIMESTAMP), txVisibilityState);
}