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ljain pushed a commit to branch trunk
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The following commit(s) were added to refs/heads/trunk by this push:
new 6bcc1dc HDDS-1503. Reduce garbage generated by non-netty threads in
datanode ratis server (#813)
6bcc1dc is described below
commit 6bcc1dce52b6198949330d36c74835d9b6c2c982
Author: Lokesh Jain <[email protected]>
AuthorDate: Tue May 14 14:49:50 2019 +0530
HDDS-1503. Reduce garbage generated by non-netty threads in datanode ratis
server (#813)
---
hadoop-ozone/common/src/main/bin/ozone | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/hadoop-ozone/common/src/main/bin/ozone
b/hadoop-ozone/common/src/main/bin/ozone
index 26906c4..58eb8cd 100755
--- a/hadoop-ozone/common/src/main/bin/ozone
+++ b/hadoop-ozone/common/src/main/bin/ozone
@@ -90,7 +90,11 @@ function ozonecmd_case
;;
datanode)
HADOOP_SUBCMD_SUPPORTDAEMONIZATION="true"
- HDDS_DN_OPTS="${HDDS_DN_OPTS}
-Dlog4j.configurationFile=${HADOOP_CONF_DIR}/dn-audit-log4j2.properties"
+ # Add JVM parameter
(org.apache.ratis.thirdparty.io.netty.allocator.useCacheForAllThreads=false)
+ # for disabling netty PooledByteBufAllocator thread caches for non-netty
threads.
+ # This parameter significantly reduces GC pressure for Datanode.
+ # Corresponding Ratis issue
https://issues.apache.org/jira/browse/RATIS-534.
+ HDDS_DN_OPTS="${HDDS_DN_OPTS}
-Dlog4j.configurationFile=${HADOOP_CONF_DIR}/dn-audit-log4j2.properties
-Dorg.apache.ratis.thirdparty.io.netty.allocator.useCacheForAllThreads=false"
HADOOP_OPTS="${HADOOP_OPTS} ${HDDS_DN_OPTS}"
HADOOP_CLASSNAME=org.apache.hadoop.ozone.HddsDatanodeService
OZONE_RUN_ARTIFACT_NAME="hadoop-ozone-datanode"
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