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https://issues.apache.org/jira/browse/IGNITE-21478?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexey Gidaspov reassigned IGNITE-21478:
----------------------------------------
Assignee: Mikhail Petrov
> OOM crash with unstable topology
> --------------------------------
>
> Key: IGNITE-21478
> URL: https://issues.apache.org/jira/browse/IGNITE-21478
> Project: Ignite
> Issue Type: Bug
> Reporter: Luchnikov Alexander
> Assignee: Mikhail Petrov
> Priority: Minor
> Labels: ise
> Attachments: HistoMinorTop.png, histo.png
>
>
> User cases:
> 1) Frequent entry/exit of a thick client into the topology leads to a crash
> of the server node due to OMM.
> 2) Frequent creation and destroy of caches leads to a server node crash due
> to OOM.
> topVer=20098
> *Real case*
> Part of the log before the OOM crash, pay attention to *topVer=20098*
> {code:java}
> Metrics for local node (to disable set 'metricsLogFrequency' to 0)
> ^-- Node [id=f080abcd, uptime=3 days, 09:00:55.274]
> ^-- Cluster [hosts=4, CPUs=6, servers=2, clients=2, topVer=20098,
> minorTopVer=6]
> ^-- Network [addrs=[192.168.1.2, 127.0.0.1], discoPort=47500,
> commPort=47100]
> ^-- CPU [CPUs=2, curLoad=86.83%, avgLoad=21.9%, GC=23.9%]
> ^-- Heap [used=867MB, free=15.29%, comm=1024MB]
> ^-- Outbound messages queue [size=0]
> ^-- Public thread pool [active=0, idle=7, qSize=0]
> ^-- System thread pool [active=0, idle=8, qSize=0]
> ^-- Striped thread pool [active=0, idle=8, qSize=0]
> {code}
> Histogram from heap-dump after node failed
> !histo.png!
> *MinorTop example*
> {code:java}
> @Test
> public void testMinorVer() throws Exception {
> Ignite server = startGrids(1);
> IgniteEx client = startClientGrid();
> String cacheName = "cacheName";
> for (int i = 0; i < 500; i++) {
> client.getOrCreateCache(cacheName);
> client.destroyCache(cacheName);
> }
> System.err.println("Heap dump time");
> Thread.sleep(1000000);
> }
> {code}
> {code:java}
> [INFO
> ][exchange-worker-#149%internal.IgniteOomTest%][GridCachePartitionExchangeManager]
> AffinityTopologyVersion [topVer=2, minorTopVer=1000],
> evt=DISCOVERY_CUSTOM_EVT, evtNode=52b4c130-1a01-4858-813a-ebc8a5dabf1e,
> client=true]
> {code}
> !HistoMinorTop.png!
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