public static ByteBuffer serializeForSSTable(ColumnFamily cf) {
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(baos);
DeletionInfo.serializer().serializeForSSTable(cf.deletionInfo(), dos);
dos.writeInt(cf.getColumnCount());
new ColumnIndex.Builder(cf, ByteBufferUtil.EMPTY_BYTE_BUFFER, dos).build(cf);
return ByteBuffer.wrap(baos.toByteArray());
} catch (IOException e) {
throw new RuntimeException(e);
}
}
private void testDontPurgeAccidentaly(String k, String cfname)
throws IOException, ExecutionException, InterruptedException {
// This test catches the regression of CASSANDRA-2786
Keyspace keyspace = Keyspace.open(KEYSPACE1);
ColumnFamilyStore cfs = keyspace.getColumnFamilyStore(cfname);
// disable compaction while flushing
cfs.clearUnsafe();
cfs.disableAutoCompaction();
// Add test row
DecoratedKey key = Util.dk(k);
RowMutation rm = new RowMutation(KEYSPACE1, key.key);
rm.add(
cfname,
CompositeType.build(ByteBufferUtil.bytes("sc"), ByteBufferUtil.bytes("c")),
ByteBufferUtil.EMPTY_BYTE_BUFFER,
0);
rm.apply();
cfs.forceBlockingFlush();
Collection<SSTableReader> sstablesBefore = cfs.getSSTables();
QueryFilter filter = QueryFilter.getIdentityFilter(key, cfname, System.currentTimeMillis());
assert !(cfs.getColumnFamily(filter).getColumnCount() == 0);
// Remove key
rm = new RowMutation(KEYSPACE1, key.key);
rm.delete(cfname, 2);
rm.apply();
ColumnFamily cf = cfs.getColumnFamily(filter);
assert cf == null || cf.getColumnCount() == 0 : "should be empty: " + cf;
// Sleep one second so that the removal is indeed purgeable even with gcgrace == 0
Thread.sleep(1000);
cfs.forceBlockingFlush();
Collection<SSTableReader> sstablesAfter = cfs.getSSTables();
Collection<SSTableReader> toCompact = new ArrayList<SSTableReader>();
for (SSTableReader sstable : sstablesAfter)
if (!sstablesBefore.contains(sstable)) toCompact.add(sstable);
Util.compact(cfs, toCompact);
cf = cfs.getColumnFamily(filter);
assert cf == null || cf.getColumnCount() == 0 : "should be empty: " + cf;
}
public static ColumnFamily cloneAndRemoveDeleted(ColumnFamily cf, int gcBefore) {
return ColumnFamilyStore.removeDeleted(cf.cloneMe(), gcBefore);
}
public static SuperColumn superColumn(ColumnFamily cf, String name, Column... columns) {
SuperColumn sc = new SuperColumn(ByteBufferUtil.bytes(name), cf.metadata().comparator);
for (Column c : columns) sc.addColumn(c);
return sc;
}