SOLR 7.4.0 We recently encountered an issue on Windows where the cleanup/uninstall processes for our product were having difficulties deleting "hsperf" directories created in SOLR's data directory. Somehow, these directories ended up with permissions preventing anyone from deleting them. Further investigation revealed that they are actually created by a JVM feature, jvmstat, which can be disabled via "-XX:-UsePerfData".
Unfortunately, adding that to SOLR_OPTS is insufficient, because that variable is only passed to the start command. At least in solr.cmd, there are other java calls that apparently result in the creation of these hsperf directories. For now, we have simply added "-XX:-UsePerfData" to all java calls in solr.cmd to work around the problem. But that is not great, as we would need to make the same changes to solr.cmd every time we upgraded SOLR. It would be nice if there was some way to pass JVM options to all java calls launched by solr.cmd (and the linux solr script). Would this be worth a lower-priority bug? -- Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html
