Hello,
I recently installed Ignite 2.8.0 on one node for test pourpose and noticed
Heap mem issue that I didn't have on 2.7.6.
The Ignite configuration of dataStorageConfiguration /
DataRegionConfiguration is identical.
In production I have two nodes (2.7.6) and for test purpose (2.8.0) only one
node.
The application consists of Apache Flume that inserts data into the cache
and several Python scripts that read/write data from/into tables using SQL
queries.
Does anyone have experience with this behavior on Ignite 2.8.0. ?
I tested using pyignite 0.3.4 and pygridgain 1.1.0.
The same issue occurs on GridGain CE 8.7.12.
On Ignite 2.7.5 with same application there is no issues with Heap mem.
The screenshots below show that on Ignite 2.7.6 Heap Mem is always within
normal ranges.
One second screenshot Ignite 2.8.0. Heap mem only grows and application
stops when the OOM happens. :-(
JVM_OPTS
-XX:+UseG1GC
-XX:+AlwaysPreTouch
-XX:+ScavengeBeforeFullGC
-XX:+DisableExplicitGC
-Xms512m -Xmx1g
Metrics for local node (to disable set 'metricsLogFrequency' to 0)
^-- Node [id=1ce47741, name=UMBOSS, uptime=00:46:08.050]
^-- H/N/C [hosts=1, nodes=2, CPUs=8]
^-- CPU [cur=52.07%, avg=12.77%, GC=24.1%]
^-- PageMemory [pages=115217]
^-- Heap [used=1001MB, free=2.15%, comm=1024MB]
^-- Off-heap [used=455MB, free=80.61%, comm=1480MB]
^-- sysMemPlc region [used=0MB, free=99.99%, comm=100MB]
^-- metastoreMemPlc region [used=0MB, free=99.95%, comm=0MB]
^-- PersistDataRegion region [used=440MB, free=56.95%, comm=1024MB]
^-- TxLog region [used=0MB, free=100%, comm=100MB]
^-- DefaultDataRegion region [used=14MB, free=98.59%, comm=256MB]
^-- Ignite persistence [used=479MB]
^-- sysMemPlc region [used=0MB]
^-- metastoreMemPlc region [used=0MB]
^-- PersistDataRegion region [used=479MB]
^-- TxLog region [used=0MB]
^-- Outbound messages queue [size=0]
^-- Public thread pool [active=0, idle=0, qSize=0]
^-- System thread pool [active=1, idle=4, qSize=0]
Best regards
Dren
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