@SuppressWarnings("resource") // log and writer closed by SSTableTxnWriter
public SSTableTxnWriter createFlushWriter(
String filename, PartitionColumns columns, EncodingStats stats) {
// we operate "offline" here, as we expose the resulting reader consciously when done
// (although we may want to modify this behaviour in future, to encapsulate full flush behaviour
// in LifecycleTransaction)
LifecycleTransaction txn = null;
try {
txn = LifecycleTransaction.offline(OperationType.FLUSH);
MetadataCollector sstableMetadataCollector =
new MetadataCollector(cfs.metadata.comparator)
.commitLogIntervals(
new IntervalSet(commitLogLowerBound.get(), commitLogUpperBound.get()));
return new SSTableTxnWriter(
txn,
cfs.createSSTableMultiWriter(
Descriptor.fromFilename(filename),
(long) partitions.size(),
ActiveRepairService.UNREPAIRED_SSTABLE,
sstableMetadataCollector,
new SerializationHeader(true, cfs.metadata, columns, stats),
txn));
} catch (Throwable t) {
if (txn != null) txn.close();
throw t;
}
}
@SuppressWarnings("resource")
public MaxSSTableSizeWriter(
ColumnFamilyStore cfs,
Directories directories,
LifecycleTransaction txn,
Set<SSTableReader> nonExpiredSSTables,
long maxSSTableSize,
int level,
boolean offline,
boolean keepOriginals) {
super(cfs, directories, txn, nonExpiredSSTables, offline, keepOriginals);
this.allSSTables = txn.originals();
this.level = level;
this.maxSSTableSize = maxSSTableSize;
long totalSize = getTotalWriteSize(nonExpiredSSTables, estimatedTotalKeys, cfs, txn.opType());
expectedWriteSize = Math.min(maxSSTableSize, totalSize);
estimatedSSTables = Math.max(1, totalSize / maxSSTableSize);
}