tillrohrmann commented on a change in pull request #9703: [FLINK-14038]Add
default GC options for flink on yarn to facilitate debugging
URL: https://github.com/apache/flink/pull/9703#discussion_r341645233
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File path:
flink-runtime/src/main/java/org/apache/flink/runtime/clusterframework/BootstrapTools.java
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@@ -513,6 +514,76 @@ public static Configuration
cloneConfiguration(Configuration configuration) {
return clonedConfiguration;
}
+ /**
+ * Format the default gc logging options
+ * @param logDirectory to save the gc log
+ * @return the formatted gc logging options string
+ */
+ public static String getGCLoggingOpts(String logDirectory) {
+ return "-Xloggc:" + logDirectory + "/gc.log " +
+ "-XX:+PrintGCApplicationStoppedTime " +
+ "-XX:+PrintGCDetails " +
+ "-XX:+PrintGCDateStamps " +
+ "-XX:+UseGCLogFileRotation " +
+ "-XX:NumberOfGCLogFiles=10 " +
+ "-XX:GCLogFileSize=10M " +
+ "-XX:+PrintPromotionFailure " +
+ "-XX:+PrintGCCause";
+ }
+
+ /**
+ * Format the default heapdump options
+ * @param appId application id
+ * @param ident the ident of the process, taskmanager/jobmanager
+ * @param logDirectory to print some logs
+ * @param heapdumpDir to save heap dump file
+ * @return the formatted heapdump options string
+ */
+ public static String getHeapdumpOpts(String appId, String ident, String
logDirectory, String heapdumpDir) {
+ String dumpDestName = String.format("flink-%s-heapdump.hprof", ident);
+ String dumpFileDestPath = new File(heapdumpDir, appId + "-" +
dumpDestName).getAbsolutePath();
+ String oomScript = String.format("echo -e 'OutOfMemoryError! Killing
current process %%p...\n" +
+ "Check gc logs and heapdump file(%s) for details.' > " +
+ logDirectory + "/%s.err; " +
+ "kill -9 %%p",
+ dumpFileDestPath, ident);
+ return String.format("-XX:+HeapDumpOnOutOfMemoryError " +
+ "-XX:HeapDumpPath=%s " +
+ "-XX:OnOutOfMemoryError=\"%s\"",
+ dumpFileDestPath,
+ oomScript);
+ }
Review comment:
Same here. Please use tabs for indentation.
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