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From Tommy Becker <>
Subject Re: How to set up RocksDB
Date Mon, 09 Nov 2015 17:05:29 GMT
The native RocksDB libs are included in the jar file, but they are extracted at runtime before
they can be loaded. Make sure the user running the job has permission to write to...wherever
it is that it tries to put it (sorry don't know offhand). But you shouldn't have to set any
environment variables or anything for it to work.

On 11/09/2015 08:50 AM, Lukáš Havrlant wrote:

we have a problem with configuring RocksDB as a key-value store with our
Samza 0.9.0 project. We added this line to our config:

But then our Samza job couldn't locate the
RocksDbKeyValueStorageEngineFactory class. So we added compile
"org.apache.samza:samza-kv-rocksdb_2.10:$samzaVersion" to our gradle build
script. It helped but now Samza failed to start because it couldn't
find library. We added export
ROCKSDB_SHAREDLIB_DIR=/opt/samza/lib to our init script and it didn't help.
Then we manually copied the from
the rocksdbjni-3.5.1.jar to the /opt/samza/lib folder and Samza still
couldn't start, now because of

2015-11-09T14:35:06,209 INFO [main]
org.apache.samza.container.SamzaContainer$ - Got store consumers:
Map(tracking-info ->
# A fatal error has been detected by the Java Runtime Environment:
#  SIGSEGV (0xb) at pc=0x0000003c4de092ab, pid=4410, tid=139728971949824

And we're out of ideas at the moment. Can you please help me set up RocksDB
correctly? I suppose we are doing something completely wrong.

Is it possibble to use another key-value store at least?

Lukáš Havrlant

Tommy Becker
Senior Software Engineer

A TiVo Company<><>


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