Default to BucketsHashStore for the big hash storage strategy

* CompactHashStore seems to be more prone to races:
  #3447
* Until a thread-safe Hash implementation is merged.

Author: eregon

src/main/java/org/truffleruby/options/LanguageOptions.java

@@ -41,7 +41,7 @@ public final class LanguageOptions {
     public final boolean LAZY_TRANSLATION_USER;
     /** --backtraces-omit-unused=true */
     public final boolean BACKTRACES_OMIT_UNUSED;
-    /** --buckets-big-hash=false */
+    /** --buckets-big-hash=true */
     public final boolean BIG_HASH_STRATEGY_IS_BUCKETS;
     /** --building-core-cexts=false */
     public final boolean BUILDING_CORE_CEXTS;

src/options.yml

@@ -118,7 +118,7 @@ EXPERT:
     BACKTRACES_OMIT_UNUSED: [backtraces-omit-unused, boolean, true, Omit backtraces that should be unused as they have pure rescue expressions]
 
     # Big Hash Strategy
-    BIG_HASH_STRATEGY_IS_BUCKETS: [buckets-big-hash, boolean, false, 'Whether to use chaining-style buckets hash store for hash tables exceeding the small hash limit']
+    BIG_HASH_STRATEGY_IS_BUCKETS: [buckets-big-hash, boolean, true, 'Whether to use chaining-style buckets hash store for hash tables exceeding the small hash limit']
 
     # Print backtraces at key events
     BACKTRACE_ON_INTERRUPT: [backtraces-on-interrupt, boolean, false, Show the backtraces of all Threads on Ctrl+C]

src/shared/java/org/truffleruby/shared/options/OptionsCatalog.java

@@ -62,7 +62,7 @@ public final class OptionsCatalog {
     public static final OptionKey<Boolean> EXCEPTIONS_WARN_OUT_OF_MEMORY_KEY = new OptionKey<>(true);
     public static final OptionKey<Boolean> BACKTRACES_INTERLEAVE_JAVA_KEY = new OptionKey<>(false);
     public static final OptionKey<Boolean> BACKTRACES_OMIT_UNUSED_KEY = new OptionKey<>(true);
-    public static final OptionKey<Boolean> BIG_HASH_STRATEGY_IS_BUCKETS_KEY = new OptionKey<>(false);
+    public static final OptionKey<Boolean> BIG_HASH_STRATEGY_IS_BUCKETS_KEY = new OptionKey<>(true);
     public static final OptionKey<Boolean> BACKTRACE_ON_INTERRUPT_KEY = new OptionKey<>(false);
     public static final OptionKey<Boolean> BACKTRACE_ON_SIGALRM_KEY = new OptionKey<>(!EMBEDDED_KEY.getDefaultValue());
     public static final OptionKey<Boolean> BACKTRACE_ON_RAISE_KEY = new OptionKey<>(false);