ivandasch commented on pull request #9044:
URL: https://github.com/apache/ignite/pull/9044#issuecomment-843963900
I suppose that constantly running python tests doesn't help.
If you look at logs, you will see NPE
```
[2021-05-19T11:17:57,828][ERROR][exchange-worker-#118][GridDhtPartitionsExchangeFuture]
Failed to initialize cache(s) (will try to rollback)
[exchId=GridDhtPartitionExchangeId [topVer=AffinityTopologyVersion [topVer=3,
minorTopVer=8], discoEvt=DiscoveryCustomEvent
[customMsg=DynamicCacheChangeBatch
[id=3f923b38971-7e2b344a-a560-4e74-a44e-8798a26c073a, reqs=ArrayList
[DynamicCacheChangeRequest [cacheName=expiry_cache, hasCfg=true,
nodeId=b2f50d47-946d-49cd-82f4-a869a3b542bd, clientStartOnly=false, stop=false,
destroy=false, disabledAfterStart=false]], exchangeActions=ExchangeActions
[startCaches=[expiry_cache], stopCaches=null, startGrps=[expiry_cache],
stopGrps=[], resetParts=null, stateChangeRequest=null], startCaches=false],
affTopVer=AffinityTopologyVersion [topVer=3, minorTopVer=8],
super=DiscoveryEvent [evtNode=TcpDiscoveryNode
[id=b2f50d47-946d-49cd-82f4-a869a3b542bd, consistentId=srv_1, addrs=ArrayList
[127.0.0.1], sockAddrs=HashSet [/127.0.0.1:48500], discPort=48500, order
=1, intOrder=1, lastExchangeTime=1621412227458, loc=true,
ver=2.11.0#20210519-sha1:00000000, isClient=false], topVer=3, msgTemplate=null,
span=o.a.i.i.processors.tracing.NoopSpan@695cee68, nodeId8=b2f50d47, msg=null,
type=DISCOVERY_CUSTOM_EVT, tstamp=1621412277807]], nodeId=b2f50d47,
evt=DISCOVERY_CUSTOM_EVT],
caches=[o.a.i.i.processors.cache.ExchangeActions$CacheGroupActionData@3b5d0f91]]
java.lang.NullPointerException: null
at
org.apache.ignite.internal.processors.cache.GridCacheProcessor.buildExpirePolicyInfo(GridCacheProcessor.java:2410)
~[classes/:?]
at
org.apache.ignite.internal.processors.cache.GridCacheProcessor.onCacheStarted(GridCacheProcessor.java:2311)
~[classes/:?]
at
org.apache.ignite.internal.processors.cache.GridCacheProcessor.prepareCacheStart(GridCacheProcessor.java:1977)
~[classes/:?]
at
org.apache.ignite.internal.processors.cache.GridCacheProcessor.lambda$prepareStartCaches$55a0e703$1(GridCacheProcessor.java:1841)
~[classes/:?]
at
org.apache.ignite.internal.processors.cache.GridCacheProcessor.lambda$prepareStartCachesIfPossible$14(GridCacheProcessor.java:1811)
~[classes/:?]
at
org.apache.ignite.internal.processors.cache.GridCacheProcessor.prepareStartCaches(GridCacheProcessor.java:1838)
~[classes/:?]
at
org.apache.ignite.internal.processors.cache.GridCacheProcessor.prepareStartCachesIfPossible(GridCacheProcessor.java:1809)
~[classes/:?]
at
org.apache.ignite.internal.processors.cache.CacheAffinitySharedManager.processCacheStartRequests(CacheAffinitySharedManager.java:999)
~[classes/:?]
at
org.apache.ignite.internal.processors.cache.CacheAffinitySharedManager.onCacheChangeRequest(CacheAffinitySharedManager.java:885)
~[classes/:?]
at
org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionsExchangeFuture.onCacheChangeRequest(GridDhtPartitionsExchangeFuture.java:1449)
[classes/:?]
at
org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionsExchangeFuture.init(GridDhtPartitionsExchangeFuture.java:947)
[classes/:?]
at
org.apache.ignite.internal.processors.cache.GridCachePartitionExchangeManager$ExchangeWorker.body0(GridCachePartitionExchangeManager.java:3379)
[classes/:?]
at
org.apache.ignite.internal.processors.cache.GridCachePartitionExchangeManager$ExchangeWorker.body(GridCachePartitionExchangeManager.java:3201)
[classes/:?]
at
org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:120)
[classes/:?]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_261]
```
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