iamaleksey commented on code in PR #4392:
URL: https://github.com/apache/cassandra/pull/4392#discussion_r2387236676
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src/java/org/apache/cassandra/replication/MutationJournal.java:
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@@ -20,35 +20,54 @@
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Collection;
+import java.util.Map;
import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.function.BiConsumer;
import java.util.zip.Checksum;
-
import javax.annotation.Nullable;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Preconditions;
+import org.apache.cassandra.journal.*;
+import org.cliffc.high_scale_lib.NonBlockingHashMap;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import accord.utils.Invariants;
+import org.apache.cassandra.concurrent.Stage;
import org.apache.cassandra.config.DatabaseDescriptor;
+import org.apache.cassandra.db.Keyspace;
import org.apache.cassandra.db.Mutation;
import org.apache.cassandra.db.TypeSizes;
+import org.apache.cassandra.db.commitlog.CommitLogPosition;
+import org.apache.cassandra.db.partitions.PartitionUpdate;
import org.apache.cassandra.io.util.DataInputPlus;
import org.apache.cassandra.io.util.DataOutputPlus;
import org.apache.cassandra.io.util.File;
-import org.apache.cassandra.journal.Journal;
-import org.apache.cassandra.journal.KeySupport;
-import org.apache.cassandra.journal.Params;
-import org.apache.cassandra.journal.RecordConsumer;
-import org.apache.cassandra.journal.RecordPointer;
-import org.apache.cassandra.journal.SegmentCompactor;
-import org.apache.cassandra.journal.ValueSerializer;
import org.apache.cassandra.net.MessagingService;
+import org.apache.cassandra.schema.Schema;
+import org.apache.cassandra.schema.TableId;
import org.apache.cassandra.utils.FBUtilities;
+import org.apache.cassandra.utils.concurrent.Semaphore;
+import static org.apache.cassandra.utils.FBUtilities.getAvailableProcessors;
+
+// TODO (required): handle table truncations
public class MutationJournal
{
public static final MutationJournal instance = new MutationJournal();
+ private static final Logger log =
LoggerFactory.getLogger(MutationJournal.class);
private final Journal<ShortMutationId, Mutation> journal;
+ private final Map<Long, SegmentStateTracker> segmentStateTrackers;
Review Comment:
Yes, this could be a `NonBlockingHashMapLong` instead.
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