FastLRUCache/ConcurrentLRUCache computeIfAbsent is BLOCKED

Does anyone have similar problems? The cache class we configured is FastLRUCache in solrconfig.xml Many threads are blocking the stack below: "qtp2141817446-2744893" #2744893 prio=5 os_prio=0 tid=0x7f0b1b9f4800 nid=0x3ea9 waiting for monitor entry [0x7f0b16bdd000] java.lang

【Solr 8.11.2】RejectedExecutionException: Max requests queued per destination 3000 exceeded

Hello everyone. We recently encountered another online question, only restart the process can recover. Does anyone know why? How to detect this exception > All queries will report the following errors：Max requests queued per destination 3000 exceeded > At first, I suspected that the thr

【Solr 8.11.2】HttpShardHandler.takeCompletedOrError do not return for a long time

Hello everyone. We recently encountered an online problem, only restart the process can recover. > The following threads are always in the WAITING state, will not exit > There is no obvious exception message in the log. > Maybe, the problem will only be triggered when querying multipl

After Solr 7.7 upgrade to Solr 8.11, there are two pieces of data in the same row, default overwrite is false?

Hello everyone. We recently upgraded the online version from Solr 7 to 8.11, we found a very strange problem. Before upgrade, we wrote a row of data, the id is uniqueKey. id=1, name=alice, age=10 After upgrade, we write three rows of data and id=2 is repeated. id=1, name=alice2,

Are there any significant performance differences between json.facet and stats?

Hello everyone. We want to Implement a statistical analysis requirement. There are two ways to meet my requirement after viewing the Solr Ref Guide(8.11) Schema is defined as follows: timestamp, indexd=true, docValues=true status, indexed=true, docValues=true user_count, indexed=true, do

Upgrade SOLR 7.3 to 8.9，json.facet query performance drops a lot

Hello everyone. We recently upgraded our online environment to a new solr version(8.9.0) from 7.3, we found that facet query performance decreased a lot. Solr 7.3 take about 100 milliseconds, but Solr 8.9 may take about 500 milliseconds. We exclude the effects of GC and caching. Are there

Dead lock on CountSlotArrAcc initialization（Update java stack）

Hello everyone. We have a strange problem recently in solr-8.9.x Very many facet threads are in runnable state, never quit, all in Object.wait Maybe it's a bug：https://bugs.openjdk.java.net/browse/JDK-8037567 Has anyone ever encountered a similar error? "SearchHandler-qtp148626113-17351269" #1

Dead lock on CountSlotArrAcc initialization

Hello everyone. We have a strange problem recently in solr-8.9.x Very many facet threads are in runnable state, never quit, all in Object.wait Maybe it's a bug：https://bugs.openjdk.java.net/browse/JDK-8037567 Has anyone ever encountered a similar error? | | | | | Thanks.