J Mauvais created SOLR-15522:
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Summary: Service Solr Stop WAITING (parking) Removed solr.pid Files
Key: SOLR-15522
URL: https://issues.apache.org/jira/browse/SOLR-15522
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Components: SolrCloud
Affects Versions: 8.6.3
Reporter: J Mauvais
Setup: Solr 8.6.3, external ZooKeeper 3.6.2 on Linux, 20 shards (5 x 4 nodes).
The issues have occurred twice when issuing 'service solr stop' command.
* Errors like 'waiting on condition', 'TIMED_WAITING',
{code:java}
Full thread dump Java HotSpot(TM) 64-Bit Server VM (25.271-b09 mixed mode):
"Attach Listener" #142 daemon prio=9 os_prio=0 tid=0x00007f72b4001000
nid=0x15777 waiting on condition [0x0000000000000000] java.lang.Thread.State:
RUNNABLE "AutoscalingActionExecutor-44-thread-1" #141 prio=5 os_prio=0
tid=0x00007f71b800f000 nid=0x152f7 waiting on condition [0x00007f72c1b35000]
java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native
Method) - parking to wait for <0x000000078e65cb38> (a
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
{code}
* It eventually killed the process.
* Somehow the PID files in SOLR_PID_DIR got deleted. This is _critical_
because without those files, a lot of commands, processes will not work.
* Checked the data directories, loads of write.lock files were generated. For
example: 'solr86-8986/data/testdata_shard14_replica_n82/data/index/write.lock'
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