Program: 31052
Project: 31052
Buggy source:
private void subscribeOne(int index,SubscriptionHolder holder,String loc,boolean newSubscription) throws JournalNetworkException {
  if (newSubscription) {
    SubscriptionHolder sub=new SubscriptionHolder();
    sub.local=holder.local;
    sub.remote=holder.remote;
    sub.listener=holder.listener;
    sub.writer=holder.writer;
    subscriptions.add(sub);
  }
  JournalWriter writer=writers.getQuiet(index);
  try {
    commandProducer.write(channel,Command.ADD_KEY_CMD);
    setKeyRequestProducer.write(channel,new IndexedJournalKey(index,holder.remote));
    checkAck();
    JournalMetadata metadata;
    File file=Files.makeTempFile();
    try {
      try (HugeBufferConsumer h=new HugeBufferConsumer(file)){
        h.read(channel);
        metadata=new JournalMetadata(h.getHb());
      }
 catch (      JournalException e) {
        throw new JournalNetworkException(e);
      }
    }
  finally {
      Files.delete(file);
    }
    boolean validate=true;
    if (writer == null) {
      if (holder.writer == null) {
        try {
          writer=factory.writer(new JournalStructure(metadata).location(loc));
        }
 catch (        JournalException e) {
          LOG.error().$("String_Node_Str").$(e).$();
          unsubscribe(index,null,holder,JournalEvents.EVT_JNL_INCOMPATIBLE);
          return;
        }
        writersToClose.add(writer);
        validate=false;
      }
 else {
        writer=holder.writer;
      }
      writer.disableCommitOnClose();
      statusSentList.extendAndSet(index,0);
      deltaConsumers.extendAndSet(index,new JournalDeltaConsumer(writer));
      writers.extendAndSet(index,writer);
      writer.setJournalListener(holder.listener);
    }
 else {
      statusSentList.setQuick(index,0);
    }
    if (validate && !metadata.isCompatible(writer.getMetadata(),false)) {
      LOG.error().$("String_Node_Str").$(holder.local.path()).$("String_Node_Str").$(holder.remote.path()).$("String_Node_Str").$();
      unsubscribe(index,writer,holder,JournalEvents.EVT_JNL_INCOMPATIBLE);
      return;
    }
    commandProducer.write(channel,Command.DELTA_REQUEST_CMD);
    journalClientStateProducer.write(channel,new IndexedJournal(index,writer));
    checkAck();
    statusSentList.setQuick(index,1);
    if (holder.listener != null) {
      holder.listener.onEvent(JournalEvents.EVT_JNL_SUBSCRIBED);
    }
    LOG.info().$("String_Node_Str").$(loc).$("String_Node_Str").$(holder.remote.path()).$("String_Node_Str").$();
  }
 catch (  JournalNetworkException e) {
    LOG.error().$("String_Node_Str").$(loc).$("String_Node_Str").$(holder.remote.path()).$("String_Node_Str").$();
    unsubscribe(index,writer,holder,JournalEvents.EVT_JNL_SERVER_ERROR);
  }
}

Fixed version (ground truth):
private void subscribeOne(int index,SubscriptionHolder holder,String loc,boolean newSubscription){
  if (newSubscription) {
    SubscriptionHolder sub=new SubscriptionHolder();
    sub.local=holder.local;
    sub.remote=holder.remote;
    sub.listener=holder.listener;
    sub.writer=holder.writer;
    subscriptions.add(sub);
  }
  JournalWriter writer=writers.getQuiet(index);
  try {
    commandProducer.write(channel,Command.ADD_KEY_CMD);
    setKeyRequestProducer.write(channel,new IndexedJournalKey(index,holder.remote));
    checkAck();
    JournalMetadata metadata;
    File file=Files.makeTempFile();
    try {
      try (HugeBufferConsumer h=new HugeBufferConsumer(file)){
        h.read(channel);
        metadata=new JournalMetadata(h.getHb());
      }
 catch (      JournalException e) {
        throw new JournalNetworkException(e);
      }
    }
  finally {
      Files.delete(file);
    }
    boolean validate=true;
    if (writer == null) {
      if (holder.writer == null) {
        try {
          writer=factory.writer(new JournalStructure(metadata).location(loc));
        }
 catch (        JournalException e) {
          LOG.error().$("String_Node_Str").$(e).$();
          unsubscribe(index,null,holder,JournalEvents.EVT_JNL_INCOMPATIBLE);
          return;
        }
        writersToClose.add(writer);
        validate=false;
      }
 else {
        writer=holder.writer;
      }
      writer.disableCommitOnClose();
      statusSentList.extendAndSet(index,0);
      deltaConsumers.extendAndSet(index,new JournalDeltaConsumer(writer));
      writers.extendAndSet(index,writer);
      writer.setJournalListener(holder.listener);
    }
 else {
      statusSentList.setQuick(index,0);
    }
    if (validate && !metadata.isCompatible(writer.getMetadata(),false)) {
      LOG.error().$("String_Node_Str").$(holder.local.path()).$("String_Node_Str").$(holder.remote.path()).$("String_Node_Str").$();
      unsubscribe(index,writer,holder,JournalEvents.EVT_JNL_INCOMPATIBLE);
      return;
    }
    commandProducer.write(channel,Command.DELTA_REQUEST_CMD);
    journalClientStateProducer.write(channel,new IndexedJournal(index,writer));
    checkAck();
    statusSentList.setQuick(index,1);
    if (holder.listener != null) {
      holder.listener.onEvent(JournalEvents.EVT_JNL_SUBSCRIBED);
    }
    LOG.info().$("String_Node_Str").$(loc).$("String_Node_Str").$(holder.remote.path()).$("String_Node_Str").$();
  }
 catch (  JournalNetworkException e) {
    LOG.error().$("String_Node_Str").$(loc).$("String_Node_Str").$(holder.remote.path()).$("String_Node_Str").$();
    unsubscribe(index,writer,holder,JournalEvents.EVT_JNL_SERVER_ERROR);
  }
}