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Signed-off-by: Mohammad Hasnain Mohsin Rajan <[email protected]>
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# Known issues | ||
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## Cache deadlock | ||
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All elasticsearch versions between 5.5.3 (included) and 6.3.0 (excluded) are affected by a [bug](https://github.com/elastic/elasticsearch/pull/30461) in the internal cache that may lead to a serious deadlock that could in theory leak all the search threads. | ||
A possible workaround is to configure the cache to avoid as much as possible its eviction mechanism by setting these options in your `elasticsearch.yml` file: | ||
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``` | ||
ltr.caches.expire_after_write: 0 | ||
ltr.caches.expire_after_read: 0 | ||
ltr.caches.max_mem: 100mb | ||
``` | ||
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elasticsearch versions 5.6.10, 6.3.0 and onwards should include the bugfix for this bug. | ||
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2.6.0: yamlresttests fail; set -Dbuild.snapshot=false to build successfully |
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