Examples of org.apache.cassandra.db.compaction.ICompactionScanner

Package org.apache.cassandra.db.compaction

Examples of org.apache.cassandra.db.compaction.ICompactionScanner

org.apache.cassandra.db.compaction.ICompactionScanner
An ICompactionScanner is an abstraction allowing multiple SSTableScanners to be chained together under the hood. See LeveledCompactionStrategy.getScanners.

        assertFalse(scanner.hasNext());
    }


    private static void assertScanEmpty(SSTableReader sstable, int scanStart, int scanEnd)
    {
        ICompactionScanner scanner = sstable.getScanner(new DataRange(boundsFor(scanStart, scanEnd), new IdentityQueryFilter()));
        assertFalse(String.format("scan of (%03d, %03d] should be empty", scanStart, scanEnd), scanner.hasNext());
    }

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        assertEquals(1, store.getSSTables().size());
        SSTableReader sstable = store.getSSTables().iterator().next();


        // full range scan
        ICompactionScanner scanner = sstable.getScanner();
        for (int i = 2; i < 10; i++)
            assertEquals(toKey(i), new String(scanner.next().getKey().getKey().array()));


        // a simple read of a chunk in the middle
        assertScanMatches(sstable, 3, 6, 3, 6);


        // start of range edge conditions

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        assertEquals(1, store.getSSTables().size());
        SSTableReader sstable = store.getSSTables().iterator().next();


        // full range scan
        ICompactionScanner fullScanner = sstable.getScanner();
        assertScanContainsRanges(fullScanner,
                                 2, 9,
                                 102, 109,
                                 202, 209);




        // scan all three ranges separately
        ICompactionScanner scanner = sstable.getScanner(makeRanges(1, 9,
                                                                   101, 109,
                                                                   201, 209),
                                                        null);
        assertScanContainsRanges(scanner,
                                 2, 9,
                                 102, 109,
                                 202, 209);


        // skip the first range
        scanner = sstable.getScanner(makeRanges(101, 109,
                                                201, 209),
                                     null);
        assertScanContainsRanges(scanner,
                                 102, 109,
                                 202, 209);


        // skip the second range
        scanner = sstable.getScanner(makeRanges(1, 9,
                                                201, 209),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 9,
                                 202, 209);




        // skip the last range
        scanner = sstable.getScanner(makeRanges(1, 9,
                                                101, 109),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 9,
                                 102, 109);


        // the first scanned range stops short of the actual data in the first range
        scanner = sstable.getScanner(makeRanges(1, 5,
                                                101, 109,
                                                201, 209),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 5,
                                 102, 109,
                                 202, 209);


        // the first scanned range requests data beyond actual data in the first range
        scanner = sstable.getScanner(makeRanges(1, 20,
                                                101, 109,
                                                201, 209),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 9,
                                 102, 109,
                                 202, 209);




        // the middle scan range splits the outside two data ranges
        scanner = sstable.getScanner(makeRanges(1, 5,
                                                6, 205,
                                                206, 209),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 5,
                                 7, 9,
                                 102, 109,
                                 202, 205,
                                 207, 209);


        // empty ranges
        scanner = sstable.getScanner(makeRanges(0, 1,
                                                2, 20,
                                                101, 109,
                                                150, 159,
                                                201, 209,
                                                1000, 1001),
                                     null);
        assertScanContainsRanges(scanner,
                                 3, 9,
                                 102, 109,
                                 202, 209);


        // out of order ranges
        scanner = sstable.getScanner(makeRanges(201, 209,
                                                1, 20,
                                                201, 209,
                                                101, 109,
                                                1000, 1001,
                                                150, 159),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 9,
                                 102, 109,
                                 202, 209);


        // only empty ranges
        scanner = sstable.getScanner(makeRanges(0, 1,
                                                150, 159,
                                                250, 259),
                                     null);
        assertFalse(scanner.hasNext());


        // no ranges is equivalent to a full scan
        scanner = sstable.getScanner(new ArrayList<Range<Token>>(), null);
        assertFalse(scanner.hasNext());
    }

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        assertEquals(1, store.getSSTables().size());
        SSTableReader sstable = store.getSSTables().iterator().next();


        // full range scan
        ICompactionScanner fullScanner = sstable.getScanner();
        assertScanContainsRanges(fullScanner, 205, 205);


        // scan three ranges separately
        ICompactionScanner scanner = sstable.getScanner(makeRanges(101, 109,
                                                                   201, 209), null);


        // this will currently fail
        assertScanContainsRanges(scanner, 205, 205);
    }

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        rm.apply();
        store.forceBlockingFlush();
        boolean foundScanner = false;
        for (SSTableReader s : store.getSSTables())
        {
            ICompactionScanner scanner = s.getScanner(new Range<Token>(t(0), t(1), s.partitioner), null);
            scanner.next(); // throws exception pre 5407
            foundScanner = true;
        }
        assertTrue(foundScanner);
    }

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        rm.apply();
        store.forceBlockingFlush();
        boolean foundScanner = false;
        for (SSTableReader s : store.getSSTables())
        {
            ICompactionScanner scanner = s.getScanner(new Range<Token>(t(0), t(1), s.partitioner), null);
            scanner.next(); // throws exception pre 5407
            foundScanner = true;
        }
        assertTrue(foundScanner);
    }

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                                 102, 109,
                                 202, 209);




        // scan all three ranges separately
        ICompactionScanner scanner = sstable.getScanner(makeRanges(1, 9,
                                                                   101, 109,
                                                                   201, 209),
                                                        null);
        assertScanContainsRanges(scanner,
                                 2, 9,
                                 102, 109,
                                 202, 209);


        // skip the first range
        scanner = sstable.getScanner(makeRanges(101, 109,
                                                201, 209),
                                     null);
        assertScanContainsRanges(scanner,
                                 102, 109,
                                 202, 209);


        // skip the second range
        scanner = sstable.getScanner(makeRanges(1, 9,
                                                201, 209),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 9,
                                 202, 209);




        // skip the last range
        scanner = sstable.getScanner(makeRanges(1, 9,
                                                101, 109),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 9,
                                 102, 109);


        // the first scanned range stops short of the actual data in the first range
        scanner = sstable.getScanner(makeRanges(1, 5,
                                                101, 109,
                                                201, 209),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 5,
                                 102, 109,
                                 202, 209);


        // the first scanned range requests data beyond actual data in the first range
        scanner = sstable.getScanner(makeRanges(1, 20,
                                                101, 109,
                                                201, 209),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 9,
                                 102, 109,
                                 202, 209);




        // the middle scan range splits the outside two data ranges
        scanner = sstable.getScanner(makeRanges(1, 5,
                                                6, 205,
                                                206, 209),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 5,
                                 7, 9,
                                 102, 109,
                                 202, 205,
                                 207, 209);


        // empty ranges
        scanner = sstable.getScanner(makeRanges(0, 1,
                                                2, 20,
                                                101, 109,
                                                150, 159,
                                                201, 209,
                                                1000, 1001),
                                     null);
        assertScanContainsRanges(scanner,
                                 3, 9,
                                 102, 109,
                                 202, 209);


        // out of order ranges
        scanner = sstable.getScanner(makeRanges(201, 209,
                                                1, 20,
                                                201, 209,
                                                101, 109,
                                                1000, 1001,
                                                150, 159),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 9,
                                 102, 109,
                                 202, 209);


        // only empty ranges
        scanner = sstable.getScanner(makeRanges(0, 1,
                                                150, 159,
                                                250, 259),
                                     null);
        assertFalse(scanner.hasNext());


        // no ranges is equivalent to a full scan
        scanner = sstable.getScanner(new ArrayList<Range<Token>>(), null);
        assertFalse(scanner.hasNext());
    }

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        // full range scan
        SSTableScanner fullScanner = sstable.getScanner();
        assertScanContainsRanges(fullScanner, 205, 205);


        // scan three ranges separately
        ICompactionScanner scanner = sstable.getScanner(makeRanges(101, 109,
                                                                   201, 209), null);


        // this will currently fail
        assertScanContainsRanges(scanner, 205, 205);
    }

View Full Code Here

                                 102, 109,
                                 202, 209);




        // scan all three ranges separately
        ICompactionScanner scanner = sstable.getScanner(makeRanges(1, 9,
                                                                   101, 109,
                                                                   201, 209),
                                                        null);
        assertScanContainsRanges(scanner,
                                 2, 9,
                                 102, 109,
                                 202, 209);


        // skip the first range
        scanner = sstable.getScanner(makeRanges(101, 109,
                                                201, 209),
                                     null);
        assertScanContainsRanges(scanner,
                                 102, 109,
                                 202, 209);


        // skip the second range
        scanner = sstable.getScanner(makeRanges(1, 9,
                                                201, 209),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 9,
                                 202, 209);




        // skip the last range
        scanner = sstable.getScanner(makeRanges(1, 9,
                                                101, 109),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 9,
                                 102, 109);


        // the first scanned range stops short of the actual data in the first range
        scanner = sstable.getScanner(makeRanges(1, 5,
                                                101, 109,
                                                201, 209),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 5,
                                 102, 109,
                                 202, 209);


        // the first scanned range requests data beyond actual data in the first range
        scanner = sstable.getScanner(makeRanges(1, 20,
                                                101, 109,
                                                201, 209),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 9,
                                 102, 109,
                                 202, 209);




        // the middle scan range splits the outside two data ranges
        scanner = sstable.getScanner(makeRanges(1, 5,
                                                6, 205,
                                                206, 209),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 5,
                                 7, 9,
                                 102, 109,
                                 202, 205,
                                 207, 209);


        // empty ranges
        scanner = sstable.getScanner(makeRanges(0, 1,
                                                2, 20,
                                                101, 109,
                                                150, 159,
                                                201, 209,
                                                1000, 1001),
                                     null);
        assertScanContainsRanges(scanner,
                                 3, 9,
                                 102, 109,
                                 202, 209);


        // out of order ranges
        scanner = sstable.getScanner(makeRanges(201, 209,
                                                1, 20,
                                                201, 209,
                                                101, 109,
                                                1000, 1001,
                                                150, 159),
                                     null);
        assertScanContainsRanges(scanner,
                                 2, 9,
                                 102, 109,
                                 202, 209);


        // only empty ranges
        scanner = sstable.getScanner(makeRanges(0, 1,
                                                150, 159,
                                                250, 259),
                                     null);
        assertFalse(scanner.hasNext());


        // no ranges is equivalent to a full scan
        scanner = sstable.getScanner(new ArrayList<Range<Token>>(), null);
        assertFalse(scanner.hasNext());
    }

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        rm.apply();
        store.forceBlockingFlush();
        boolean foundScanner = false;
        for (SSTableReader s : store.getSSTables())
        {
            ICompactionScanner scanner = s.getScanner(new Range<Token>(t(0), t(1), s.partitioner), null);
            scanner.next(); // throws exception pre 5407
            foundScanner = true;
        }
        assertTrue(foundScanner);
    }

View Full Code Here

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org.apache.cassandra.io.sstable.SSTableReaderTest

org.apache.cassandra.io.sstable.SSTableRewriterTest

org.apache.cassandra.io.sstable.SSTableScannerTest

org.apache.cassandra.io.sstable.SSTableUtils

org.apache.cassandra.tools.SSTableExport

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