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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2019/04/15 23:31:30 UTC

[GitHub] [incubator-druid] dene14 edited a comment on issue #5518: Store lookups-cached-global data on disk for more reliable startup

dene14 edited a comment on issue #5518: Store lookups-cached-global data on disk for more reliable startup
URL: https://github.com/apache/incubator-druid/issues/5518#issuecomment-483455508
 
 
   @gianm Is it possible to have lookup cache shared between subsequent ingestion tasks? I feel like no, because even if I use offHeap cache type, it generates cache file with dynamic name for every created peon, for e.g.:
   ```
   # ls -al /opt/apache-druid-0.14.0-incubating/var/tmp/druidMapDB*
   -rw-r--r-- 1 root root  56623104 Apr 15 23:18 /opt/apache-druid-0.14.0-incubating/var/tmp/druidMapDB3576988999697240527org.apache.druid.server.lookup.namespace.cache.OffHeapNamespaceExtractionCacheManager
   -rw-r--r-- 1 root root 363855872 Apr 15 23:18 /opt/apache-druid-0.14.0-incubating/var/tmp/druidMapDB3576988999697240527org.apache.druid.server.lookup.namespace.cache.OffHeapNamespaceExtractionCacheManager.p
   -rw-r--r-- 1 root root  56623104 Apr 15 23:17 /opt/apache-druid-0.14.0-incubating/var/tmp/druidMapDB6315615901868519681org.apache.druid.server.lookup.namespace.cache.OffHeapNamespaceExtractionCacheManager
   -rw-r--r-- 1 root root 364904448 Apr 15 23:17 /opt/apache-druid-0.14.0-incubating/var/tmp/druidMapDB6315615901868519681org.apache.druid.server.lookup.namespace.cache.OffHeapNamespaceExtractionCacheManager.p
   ```
   
   I'm not sure if it deserves a separate issue, but if you have a workaround for this, feel free to share.
   Thanks!

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