[ https://issues.apache.org/jira/browse/CASSANDRA-14757?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robert Stupp updated CASSANDRA-14757: ------------------------------------- Status: Patch Available (was: In Progress) > GCInspector "Error accessing field of java.nio.Bits" under java11 > ----------------------------------------------------------------- > > Key: CASSANDRA-14757 > URL: https://issues.apache.org/jira/browse/CASSANDRA-14757 > Project: Cassandra > Issue Type: Bug > Components: Metrics > Reporter: Jason Brown > Assignee: Robert Stupp > Priority: Trivial > Labels: Java11, pull-request-available > Fix For: 4.0 > > Time Spent: 10m > Remaining Estimate: 0h > > Running under java11, {{GCInspector}} throws the following exception: > {noformat} > DEBUG [main] 2018-09-18 05:18:25,905 GCInspector.java:78 - Error accessing > field of java.nio.Bits > java.lang.NoSuchFieldException: totalCapacity > at java.base/java.lang.Class.getDeclaredField(Class.java:2412) > at > org.apache.cassandra.service.GCInspector.<clinit>(GCInspector.java:72) > at > org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:308) > at > org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:590) > at > org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:679) > {noformat} > This is because {{GCInspector}} uses reflection to read the {{totalCapacity}} > from {{java.nio.Bits}}. This field was renamed to {{TOTAL_CAPACITY}} > somewhere between java8 and java11. > Note: this is a rather harmless error, as we only look at > {{Bits.totalCapacity}} for metrics collection on how much direct memory is > being used by {{ByteBuffer}}s. If we fail to read the field, we simply return > -1 for the metric value. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org