Improve GET_JSON_OBJECT performance on executors running multiple tasks

com.fasterxml.jackson.core.util.InternCache.intern(InternCache.java:50) - blocked on java.lang.Object@7529fde1 com.fasterxml.jackson.core.sym.ByteQuadsCanonicalizer.addName(ByteQuadsCanonicalizer.java:947) com.fasterxml.jackson.core.json.UTF8StreamJsonParser.addName(UTF8StreamJsonParser.java:2482) com.fasterxml.jackson.core.json.UTF8StreamJsonParser.findName(UTF8StreamJsonParser.java:2339) com.fasterxml.jackson.core.json.UTF8StreamJsonParser.parseMediumName(UTF8StreamJsonParser.java:1870) com.fasterxml.jackson.core.json.UTF8StreamJsonParser._parseName(UTF8StreamJsonParser.java:1825) com.fasterxml.jackson.core.json.UTF8StreamJsonParser.nextToken(UTF8StreamJsonParser.java:798) com.fasterxml.jackson.core.base.ParserMinimalBase.skipChildren(ParserMinimalBase.java:240) org.apache.spark.sql.catalyst.expressions.GetJsonObjectBase.evaluatePath(jsonExpressions.scala:383) org.apache.spark.sql.catalyst.expressions.GetJsonObjectBase.evaluatePath(jsonExpressions.scala:287) org.apache.spark.sql.catalyst.expressions.GetJsonObjectBase.$anonfun$eval$4(jsonExpressions.scala:198) org.apache.spark.sql.catalyst.expressions.GetJsonObjectBase.$anonfun$eval$4$adapted(jsonExpressions.scala:196) org.apache.spark.sql.catalyst.expressions.GetJsonObjectBase$$Lambda$8585/1316745697.apply(Unknown Source)
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            synchronized (lock) {
                if (size() >= MAX_ENTRIES) {
                    clear();
                }
            }

            /* As of 2.18, the limit is not strictly enforced, but we do try to
             * clear entries if we have reached the limit. We do not expect to
             * go too much over the limit, and if we do, it's not a huge problem.
             * If some other thread has the lock, we will not clear but the lock should
             * not be held for long, so another thread should be able to clear in the near future.
             */
            if (lock.tryLock()) {
                try {
                    if (size() >= DEFAULT_MAX_ENTRIES) {
                        clear();
                    }
                } finally {
                    lock.unlock();
                }
            }