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Posted to commits@cassandra.apache.org by "J.B. Langston (JIRA)" <ji...@apache.org> on 2012/12/06 16:59:10 UTC
[jira] [Updated] (CASSANDRA-5037) Set CASSANDRA_HEAPDUMP_DIR in
cassandra-env.sh by default
[ https://issues.apache.org/jira/browse/CASSANDRA-5037?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
J.B. Langston updated CASSANDRA-5037:
-------------------------------------
Description: Cassandra is configured via -XX:+HeapDumpOnOutOfMemoryError to trigger a heap dump at the occurrence of an OutOfMemoryError, but unless you have set your CASSANDRA_HEAPDUMP_DIR in cassandra-env.sh, the file will be written in the Cassandra process's working directory, which, when Cassandra is run as a service is typically the root directory. Nine times out of ten, the Cassandra process does not have permission to write here so no heap dump is written. Even if Cassandra does have permission, the root filesystem is usually small and the heap dump could easily fill it up with a large Xmx configured. We should set it by default to e.g. /var/log/cassandra. (was: Cassandra is configured via -XX:+HeapDumpOnOutOfMemoryError to trigger a heap dump at the occurrence of an OutOfMemoryError, but unless you have set your CASSANDRA_HEAPDUMP_DIR in cassandra-env.sh, the file will be written in the Cassandra process's working directory, which, when Cassandra is run as a service is typically the root directory. Nine times out of ten, the Cassandra process does not have permission to write here so no heap dump is written. Even if Cassandra does have permission, the root filesystem is usually small and the heap dump could easily fill it up with a large Xmx configured. We should set it by default to, e.g. /var/log/cassandra.)
> Set CASSANDRA_HEAPDUMP_DIR in cassandra-env.sh by default
> ---------------------------------------------------------
>
> Key: CASSANDRA-5037
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5037
> Project: Cassandra
> Issue Type: Bug
> Components: Config
> Affects Versions: 1.1.7, 1.2.0 beta 3
> Reporter: J.B. Langston
> Priority: Minor
>
> Cassandra is configured via -XX:+HeapDumpOnOutOfMemoryError to trigger a heap dump at the occurrence of an OutOfMemoryError, but unless you have set your CASSANDRA_HEAPDUMP_DIR in cassandra-env.sh, the file will be written in the Cassandra process's working directory, which, when Cassandra is run as a service is typically the root directory. Nine times out of ten, the Cassandra process does not have permission to write here so no heap dump is written. Even if Cassandra does have permission, the root filesystem is usually small and the heap dump could easily fill it up with a large Xmx configured. We should set it by default to e.g. /var/log/cassandra.
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