JVM heap dump pathedit

By default, Elasticsearch configures the JVM to dump the heap on out of memory exceptions to the default data directory (this is /var/lib/elasticsearch for the RPM and Debian package distributions, and the data directory under the root of the Elasticsearch installation for the tar and zip archive distributions). If this path is not suitable for receiving heap dumps, you should modify the entry -XX:HeapDumpPath=... in jvm.options. If you specify a fixed filename instead of a directory, the JVM will repeatedly use the same file; this is one mechanism for preventing heap dumps from accumulating in the heap dump path. Alternatively, you can configure a scheduled task via your OS to remove heap dumps that are older than a configured age.