Program: 5372
Project: 5372
Buggy source:
private void upgradeCoProcessor(TableId tableId,Class<? extends Coprocessor> coprocessor) throws IOException {
  try (HBaseDDLExecutor ddlExecutor=ddlExecutorFactory.get()){
    HTableDescriptor tableDescriptor;
    try (HBaseAdmin admin=new HBaseAdmin(hConf)){
      if (!tableUtil.tableExists(admin,tableId)) {
        LOG.debug("String_Node_Str",tableId);
        return;
      }
      tableDescriptor=tableUtil.getHTableDescriptor(admin,tableId);
    }
     ProjectInfo.Version version=HBaseTableUtil.getVersion(tableDescriptor);
    if (version.compareTo(ProjectInfo.getVersion()) >= 0) {
      LOG.info("String_Node_Str",tableId,version,ProjectInfo.getVersion());
      return;
    }
    HTableDescriptorBuilder newDescriptor=tableUtil.buildHTableDescriptor(tableDescriptor);
    Map<String,HBaseTableUtil.CoprocessorInfo> coprocessorInfo=HBaseTableUtil.getCoprocessorInfo(tableDescriptor);
    for (    Map.Entry<String,HBaseTableUtil.CoprocessorInfo> coprocessorEntry : coprocessorInfo.entrySet()) {
      newDescriptor.removeCoprocessor(coprocessorEntry.getValue().getClassName());
    }
    CoprocessorDescriptor coprocessorDescriptor=coprocessorManager.getCoprocessorDescriptor(coprocessor,Coprocessor.PRIORITY_USER);
    Path path=coprocessorDescriptor.getPath() == null ? null : new Path(coprocessorDescriptor.getPath());
    newDescriptor.addCoprocessor(coprocessorDescriptor.getClassName(),path,coprocessorDescriptor.getPriority(),coprocessorDescriptor.getProperties());
    HBaseTableUtil.setVersion(newDescriptor);
    HBaseTableUtil.setTablePrefix(newDescriptor,cConf);
    disableTable(ddlExecutor,tableId);
    tableUtil.modifyTable(ddlExecutor,newDescriptor.build());
    LOG.debug("String_Node_Str",tableId);
    enableTable(ddlExecutor,tableId);
  }
   LOG.info("String_Node_Str",tableId);
}

Fixed version (ground truth):
private void upgradeCoProcessor(TableId tableId,Class<? extends Coprocessor> coprocessor) throws IOException {
  try (HBaseDDLExecutor ddlExecutor=ddlExecutorFactory.get()){
    HTableDescriptor tableDescriptor;
    try (HBaseAdmin admin=new HBaseAdmin(hConf)){
      if (!tableUtil.tableExists(admin,tableId)) {
        LOG.debug("String_Node_Str",tableId);
        return;
      }
      tableDescriptor=tableUtil.getHTableDescriptor(admin,tableId);
    }
     ProjectInfo.Version version=HBaseTableUtil.getVersion(tableDescriptor);
    if (version.compareTo(ProjectInfo.getVersion()) >= 0) {
      LOG.info("String_Node_Str",tableId,version,ProjectInfo.getVersion());
      enableTable(ddlExecutor,tableId);
      return;
    }
    HTableDescriptorBuilder newDescriptor=tableUtil.buildHTableDescriptor(tableDescriptor);
    Map<String,HBaseTableUtil.CoprocessorInfo> coprocessorInfo=HBaseTableUtil.getCoprocessorInfo(tableDescriptor);
    for (    Map.Entry<String,HBaseTableUtil.CoprocessorInfo> coprocessorEntry : coprocessorInfo.entrySet()) {
      newDescriptor.removeCoprocessor(coprocessorEntry.getValue().getClassName());
    }
    CoprocessorDescriptor coprocessorDescriptor=coprocessorManager.getCoprocessorDescriptor(coprocessor,Coprocessor.PRIORITY_USER);
    Path path=coprocessorDescriptor.getPath() == null ? null : new Path(coprocessorDescriptor.getPath());
    newDescriptor.addCoprocessor(coprocessorDescriptor.getClassName(),path,coprocessorDescriptor.getPriority(),coprocessorDescriptor.getProperties());
    HBaseTableUtil.setVersion(newDescriptor);
    HBaseTableUtil.setTablePrefix(newDescriptor,cConf);
    disableTable(ddlExecutor,tableId);
    tableUtil.modifyTable(ddlExecutor,newDescriptor.build());
    LOG.debug("String_Node_Str",tableId);
    enableTable(ddlExecutor,tableId);
  }
   LOG.info("String_Node_Str",tableId);
}