Re: Any tips for running HBase on Java 17?

[Adam Sjøgren]

  Hi Atanas,


Atanas writes:

> We run Hbase 2.5.12 with Java17. We use a rather small heap size, because
> we rely on off heap read(bucket cache) and off heap write paths.
> Apart from the defaults our hbase-env.sh contains just the very basics for
> G1GC
> export HBASE_REGIONSERVER_OPTS="-XX:+UseG1GC -XX:MaxGCPauseMillis=50 \
>                                 -Xms4G -Xmx4G \
>                                 $HBASE_REGIONSERVER_OPTS"
>
> and also "export HBASE_OFFHEAPSIZE" in our case.

Thanks for the input - it's nice to know that Java 17 is in use.

For Solr we're using ZGC, as it was recommended on the mailinglist:

      # Recommended on Solr users mailing list 
(https://lists.apache.org/thread/bcq6rdzv66m7hsnn346kzjl5qt2pxv9s):
      GC_TUNE=" \
      -XX:+UnlockExperimentalVMOptions \
      -XX:+UseZGC \
      -XX:+ParallelRefProcEnabled \
      -XX:+ExplicitGCInvokesConcurrent \
      -XX:+UseStringDeduplication \
      -XX:+AlwaysPreTouch \
      -XX:+UseNUMA \
      "

I'm not well-versed in Java, so I don't know what to think :-)


  Best regards,

    Adam

-- 
 "No more than that, but very powerful all the                Adam Sjøgren
  same; simple things are good."                        a...@novonesis.com