title: Running tests parallelly gives java heap out of memory.
body: <p>Running tests parallel gives java heap out of memory. But when I run them not parallel, there is no memory issues. This is the error- [java.lang.OutOfMemoryError: Java heap space
      at java.util.Arrays.copyOf(Arrays.java:3332)
      at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:124)
      at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:448)
      at java.lang.StringBuilder.append(StringBuilder.java:136)</p>