kkhatua commented on a change in pull request #1437: DRILL-6702: Disable CPU Reporting for non-HotSpot JDKs URL: https://github.com/apache/drill/pull/1437#discussion_r213418278
########## File path: common/src/main/java/org/apache/drill/exec/metrics/CpuGaugeSet.java ########## @@ -32,13 +32,22 @@ */ @SuppressWarnings("restriction") public class CpuGaugeSet implements MetricSet { + private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(CpuGaugeSet.class); - private OperatingSystemMXBean osMXBean; - private RuntimeMXBean rtMXBean; + private final OperatingSystemMXBean osMXBean; + private final RuntimeMXBean rtMXBean; public CpuGaugeSet() { - this.osMXBean = (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean(); this.rtMXBean = ManagementFactory.getRuntimeMXBean(); + //DRILL-6702: Instead of worrying about compiling with IBM JDK, for now, we shall provide no CPU metrics for non-HotSpot JVMs + OperatingSystemMXBean tempOSMXBean; + try { + tempOSMXBean = (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean(); + } catch (ClassCastException cce) { + logger.warn("{}. Detected non-Supported JVM [{}]. CPU Metrics in the WebUI will not be available!", cce.getMessage(), System.getProperty("java.vm.name")); Review comment: @arina-ielchiieva the only message you get is ``` java.lang.ClassCastException: com.ibm.lang.management.ExtendedOperatingSystem incompatible with com.sun.management.OperatingSystemMXBean``` Not very useful, but you still get the simplified message without stack trace. There isn't much value in adding more information than what is already there, because the issue only emerged when JDBC drivers were being built using the IBM JDK, something that a regular user will not face. (my testing showed that an OracleJDK compiled class ran without issue for an IBM JDK Runtime). I'll apply Vlad's suggestion & squash the commits. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services