EnumSet<CacheFlag> flags = EnumSet.noneOf(CacheFlag.class);
if (force) {
flags.add(CacheFlag.FORCE);
}
try {
dfs.modifyCacheDirective(builder.build(), flags);
System.out.println("Modified cache directive " + idString);
} catch (IOException e) {
System.err.println(prettifyException(e));
return 2;
}