Examples with CompactionIterator org.apache.cassandra.db.compaction.CompactionIterator used on opensource projects

Example 6 with CompactionIterator

use of org.apache.cassandra.db.compaction.CompactionIterator in project cassandra by apache.

the class SSTableRewriterTest method testAbortHelper.

private void testAbortHelper(boolean earlyException, boolean offline) throws Exception {
    Keyspace keyspace = Keyspace.open(KEYSPACE);
    ColumnFamilyStore cfs = keyspace.getColumnFamilyStore(CF);
    truncate(cfs);
    SSTableReader s = writeFile(cfs, 1000);
    if (!offline)
        cfs.addSSTable(s);
    Set<SSTableReader> compacting = Sets.newHashSet(s);
    try (ISSTableScanner scanner = compacting.iterator().next().getScanner();
        CompactionController controller = new CompactionController(cfs, compacting, 0);
        LifecycleTransaction txn = offline ? LifecycleTransaction.offline(OperationType.UNKNOWN, compacting) : cfs.getTracker().tryModify(compacting, OperationType.UNKNOWN);
        SSTableRewriter rewriter = new SSTableRewriter(txn, 100, 10000000, false);
        CompactionIterator ci = new CompactionIterator(OperationType.COMPACTION, Collections.singletonList(scanner), controller, FBUtilities.nowInSeconds(), UUIDGen.getTimeUUID())) {
        rewriter.switchWriter(getWriter(cfs, s.descriptor.directory, txn));
        while (ci.hasNext()) {
            rewriter.append(ci.next());
            if (rewriter.currentWriter().getOnDiskFilePointer() > 25000000) {
                rewriter.switchWriter(getWriter(cfs, s.descriptor.directory, txn));
            }
        }
        try {
            rewriter.throwDuringPrepare(earlyException);
            rewriter.prepareToCommit();
        } catch (Throwable t) {
            rewriter.abort();
        }
    } finally {
        if (offline)
            s.selfRef().release();
    }
    LifecycleTransaction.waitForDeletions();
    int filecount = assertFileCounts(s.descriptor.directory.list());
    assertEquals(filecount, 1);
    if (!offline) {
        assertEquals(1, cfs.getLiveSSTables().size());
        validateCFS(cfs);
        truncate(cfs);
    } else {
        assertEquals(0, cfs.getLiveSSTables().size());
        cfs.truncateBlocking();
    }
    filecount = assertFileCounts(s.descriptor.directory.list());
    if (offline) {
        // the file is not added to the CFS, therefore not truncated away above
        assertEquals(1, filecount);
        for (File f : s.descriptor.directory.listFiles()) {
            FileUtils.deleteRecursive(f);
        }
        filecount = assertFileCounts(s.descriptor.directory.list());
    }
    assertEquals(0, filecount);
    truncate(cfs);
}

Example 7 with CompactionIterator

use of org.apache.cassandra.db.compaction.CompactionIterator in project cassandra by apache.

the class SSTableRewriterTest method basicTest.

@Test
public void basicTest() throws InterruptedException {
    Keyspace keyspace = Keyspace.open(KEYSPACE);
    ColumnFamilyStore cfs = keyspace.getColumnFamilyStore(CF);
    truncate(cfs);
    for (int j = 0; j < 100; j++) {
        new RowUpdateBuilder(cfs.metadata(), j, String.valueOf(j)).clustering("0").add("val", ByteBufferUtil.EMPTY_BYTE_BUFFER).build().apply();
    }
    cfs.forceBlockingFlush();
    Set<SSTableReader> sstables = new HashSet<>(cfs.getLiveSSTables());
    assertEquals(1, sstables.size());
    assertEquals(sstables.iterator().next().bytesOnDisk(), cfs.metric.liveDiskSpaceUsed.getCount());
    int nowInSec = FBUtilities.nowInSeconds();
    try (AbstractCompactionStrategy.ScannerList scanners = cfs.getCompactionStrategyManager().getScanners(sstables);
        LifecycleTransaction txn = cfs.getTracker().tryModify(sstables, OperationType.UNKNOWN);
        SSTableRewriter writer = SSTableRewriter.constructKeepingOriginals(txn, false, 1000);
        CompactionController controller = new CompactionController(cfs, sstables, cfs.gcBefore(nowInSec));
        CompactionIterator ci = new CompactionIterator(OperationType.COMPACTION, scanners.scanners, controller, nowInSec, UUIDGen.getTimeUUID())) {
        writer.switchWriter(getWriter(cfs, sstables.iterator().next().descriptor.directory, txn));
        while (ci.hasNext()) {
            writer.append(ci.next());
        }
        writer.finish();
    }
    LifecycleTransaction.waitForDeletions();
    assertEquals(1, assertFileCounts(sstables.iterator().next().descriptor.directory.list()));
    validateCFS(cfs);
    truncate(cfs);
}

Example 8 with CompactionIterator

use of org.apache.cassandra.db.compaction.CompactionIterator in project cassandra by apache.

the class SSTableRewriterTest method testAllKeysReadable.

@Test
public void testAllKeysReadable() throws Exception {
    Keyspace keyspace = Keyspace.open(KEYSPACE);
    ColumnFamilyStore cfs = keyspace.getColumnFamilyStore(CF);
    truncate(cfs);
    for (int i = 0; i < 100; i++) {
        String key = Integer.toString(i);
        for (int j = 0; j < 10; j++) new RowUpdateBuilder(cfs.metadata(), 100, key).clustering(Integer.toString(j)).add("val", ByteBufferUtil.EMPTY_BYTE_BUFFER).build().apply();
    }
    cfs.forceBlockingFlush();
    cfs.forceMajorCompaction();
    validateKeys(keyspace);
    assertEquals(1, cfs.getLiveSSTables().size());
    SSTableReader s = cfs.getLiveSSTables().iterator().next();
    Set<SSTableReader> compacting = new HashSet<>();
    compacting.add(s);
    int keyCount = 0;
    try (ISSTableScanner scanner = compacting.iterator().next().getScanner();
        CompactionController controller = new CompactionController(cfs, compacting, 0);
        LifecycleTransaction txn = cfs.getTracker().tryModify(compacting, OperationType.UNKNOWN);
        SSTableRewriter rewriter = new SSTableRewriter(txn, 1000, 1, false);
        CompactionIterator ci = new CompactionIterator(OperationType.COMPACTION, Collections.singletonList(scanner), controller, FBUtilities.nowInSeconds(), UUIDGen.getTimeUUID())) {
        rewriter.switchWriter(getWriter(cfs, s.descriptor.directory, txn));
        while (ci.hasNext()) {
            rewriter.append(ci.next());
            if (keyCount % 10 == 0) {
                rewriter.switchWriter(getWriter(cfs, s.descriptor.directory, txn));
            }
            keyCount++;
            validateKeys(keyspace);
        }
        rewriter.finish();
    }
    validateKeys(keyspace);
    LifecycleTransaction.waitForDeletions();
    validateCFS(cfs);
    truncate(cfs);
}

Example 9 with CompactionIterator

use of org.apache.cassandra.db.compaction.CompactionIterator in project cassandra by apache.

the class SSTableRewriterTest method testCanonicalView.

@Test
public void testCanonicalView() throws Exception {
    Keyspace keyspace = Keyspace.open(KEYSPACE);
    ColumnFamilyStore cfs = keyspace.getColumnFamilyStore(CF);
    truncate(cfs);
    SSTableReader s = writeFile(cfs, 1000);
    cfs.addSSTable(s);
    Set<SSTableReader> sstables = Sets.newHashSet(s);
    assertEquals(1, sstables.size());
    boolean checked = false;
    try (ISSTableScanner scanner = sstables.iterator().next().getScanner();
        CompactionController controller = new CompactionController(cfs, sstables, 0);
        LifecycleTransaction txn = cfs.getTracker().tryModify(sstables, OperationType.UNKNOWN);
        SSTableRewriter writer = new SSTableRewriter(txn, 1000, 10000000, false);
        CompactionIterator ci = new CompactionIterator(OperationType.COMPACTION, Collections.singletonList(scanner), controller, FBUtilities.nowInSeconds(), UUIDGen.getTimeUUID())) {
        writer.switchWriter(getWriter(cfs, sstables.iterator().next().descriptor.directory, txn));
        while (ci.hasNext()) {
            writer.append(ci.next());
            if (!checked && writer.currentWriter().getFilePointer() > 15000000) {
                checked = true;
                ColumnFamilyStore.ViewFragment viewFragment = cfs.select(View.selectFunction(SSTableSet.CANONICAL));
                // canonical view should have only one SSTable which is not opened early.
                assertEquals(1, viewFragment.sstables.size());
                SSTableReader sstable = viewFragment.sstables.get(0);
                assertEquals(s.descriptor, sstable.descriptor);
                assertTrue("Found early opened SSTable in canonical view: " + sstable.getFilename(), sstable.openReason != SSTableReader.OpenReason.EARLY);
            }
        }
    }
    truncateCF();
    validateCFS(cfs);
}

Example 10 with CompactionIterator

use of org.apache.cassandra.db.compaction.CompactionIterator in project cassandra by apache.

the class SSTableRewriterTest method testNumberOfFiles_truncate.

@Test
public void testNumberOfFiles_truncate() throws Exception {
    Keyspace keyspace = Keyspace.open(KEYSPACE);
    ColumnFamilyStore cfs = keyspace.getColumnFamilyStore(CF);
    truncate(cfs);
    cfs.disableAutoCompaction();
    SSTableReader s = writeFile(cfs, 1000);
    cfs.addSSTable(s);
    Set<SSTableReader> compacting = Sets.newHashSet(s);
    List<SSTableReader> sstables;
    int files = 1;
    try (ISSTableScanner scanner = s.getScanner();
        CompactionController controller = new CompactionController(cfs, compacting, 0);
        LifecycleTransaction txn = cfs.getTracker().tryModify(compacting, OperationType.UNKNOWN);
        SSTableRewriter rewriter = new SSTableRewriter(txn, 1000, 10000000, false);
        CompactionIterator ci = new CompactionIterator(OperationType.COMPACTION, Collections.singletonList(scanner), controller, FBUtilities.nowInSeconds(), UUIDGen.getTimeUUID())) {
        rewriter.switchWriter(getWriter(cfs, s.descriptor.directory, txn));
        while (ci.hasNext()) {
            rewriter.append(ci.next());
            if (rewriter.currentWriter().getOnDiskFilePointer() > 25000000) {
                rewriter.switchWriter(getWriter(cfs, s.descriptor.directory, txn));
                files++;
                // we have one original file plus the ones we have switched out.
                assertEquals(cfs.getLiveSSTables().size(), files);
            }
        }
        sstables = rewriter.finish();
    }
    LifecycleTransaction.waitForDeletions();
    assertFileCounts(s.descriptor.directory.list());
    validateCFS(cfs);
}