[
https://issues.apache.org/jira/browse/CASSANDRA-13840?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
mck updated CASSANDRA-13840:
----------------------------
Fix Version/s: 2.1.x
> GraphiteReporter stops reporting from Memory concurrent access
> --------------------------------------------------------------
>
> Key: CASSANDRA-13840
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13840
> Project: Cassandra
> Issue Type: Bug
> Components: Observability
> Reporter: mck
> Assignee: mck
> Fix For: 2.1.x
>
>
> Gauges in the GraphiteReporter can, when getting compression offheap size,
> trip over the assertion in {{Memory.size()}}. As the GraphiteReporter only
> handles Exceptions this crashes the reporter and it sends no more metrics.
> [~benedict] described it
> [here|https://issues.apache.org/jira/browse/CASSANDRA-9625?focusedCommentId=14711914&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14711914]
> and [~jbellis] confirmed that it's now ok to remove the assertion.
> {noformat}
> java.lang.AssertionError: null
> at org.apache.cassandra.io.util.Memory.size(Memory.java:359)
> ~[apache-cassandra-2.1.12.jar:2.1.12]
> at
> org.apache.cassandra.io.compress.CompressionMetadata.offHeapSize(CompressionMetadata.java:167)
> ~[apache-cassandra-2.1.12.jar:2.1.12]
> at
> org.apache.cassandra.io.sstable.SSTableReader.getCompressionMetadataOffHeapSize(SSTableReader.java:1315)
> ~[apache-cassandra-2.1.12.jar:2.1.12]
> at
> org.apache.cassandra.metrics.ColumnFamilyMetrics$30.value(ColumnFamilyMetrics.java:573)
> ~[apache-cassandra-2.1.12.jar:2.1.12]
> at
> org.apache.cassandra.metrics.ColumnFamilyMetrics$30.value(ColumnFamilyMetrics.java:568)
> ~[apache-cassandra-2.1.12.jar:2.1.12]
> at
> com.yammer.metrics.reporting.GraphiteReporter.processGauge(GraphiteReporter.java:309)
> ~[metrics-graphite-2.2.0.jar:na]
> at
> com.yammer.metrics.reporting.GraphiteReporter.processGauge(GraphiteReporter.java:26)
> ~[metrics-graphite-2.2.0.jar:na]
> at com.yammer.metrics.core.Gauge.processWith(Gauge.java:28)
> ~[metrics-core-2.2.0.jar:na]
> at
> com.yammer.metrics.reporting.GraphiteReporter.printRegularMetrics(GraphiteReporter.java:251)
> ~[metrics-graphite-2.2.0.jar:na]
> at
> com.yammer.metrics.reporting.GraphiteReporter.run(GraphiteReporter.java:216)
> ~[metrics-graphite-2.2.0.jar:na]
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> [na:1.8.0_101]
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> [na:1.8.0_101]
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
> [na:1.8.0_101]
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
> [na:1.8.0_101]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> [na:1.8.0_101]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [na:1.8.0_101]
> at java.lang.Thread.run(Thread.java:745) [na:1.8.0_101]
> {noformat}
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