@Override
    public void run(final Status status) {
        if (!STATE_UPDATER.compareAndSet(this, PENDING, COMPLETE)) {
            LOG.warn("A timeout read-index response finally returned: {}.", status);
            return;
        }

        try {
            run(status, this.index, this.requestContext);
        } catch (final Throwable t) {
            LOG.error("Fail to run ReadIndexClosure with status: {}.", status, t);
        }
    }
Returns the request context.

@return the request context.
jraft-core/src/main/java/com/alipay/sofa/jraft/closure/ReadIndexClosure.java