Mike Schrag created SOLR-5081:
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Summary: Highly parallel document insertion hangs SolrCloud
Key: SOLR-5081
URL: https://issues.apache.org/jira/browse/SOLR-5081
Project: Solr
Issue Type: Bug
Components: SolrCloud
Affects Versions: 4.3.1
Reporter: Mike Schrag
If I do a highly parallel document load using a Hadoop cluster into an 18 node
solrcloud cluster, I can deadlock solr every time.
The ulimits on the nodes are:
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 1031181
max locked memory (kbytes, -l) unlimited
max memory size (kbytes, -m) unlimited
open files (-n) 32768
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 10240
cpu time (seconds, -t) unlimited
max user processes (-u) 515590
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
The open file count is only around 4000 when this happens.
If I bounce all the servers, things start working again, which makes me think
this is Solr and not ZK.
I'll attach the stack trace from one of the servers.
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