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From Arshak Navruzyan <>
Subject Re: OpenTSDB
Date Tue, 03 Jun 2014 23:04:20 GMT

Curious if you've seen this error before.



2014-06-03 15:30:53,736 INFO  [main] ZooKeeper: Initiating client
connection, connectString=accumulo://root:secret@localhost:2181/ecluster
sessionTimeout=5000 watcher=org.hbase.async.HBaseClient$ZKClient@6426f7af

2014-06-03 15:30:53,767 INFO  [main] TSDB: Flushing compaction queue

Exception in thread "main" java.lang.RuntimeException: Initialization failed


Caused by: java.lang.IllegalArgumentException: Invalid path string
"//root:secret@localhost:2181/ecluster" caused by empty node name specified

at org.apache.zookeeper.common.PathUtils.validatePath(

at org.apache.zookeeper.ClientCnxn.<init>(

at org.apache.zookeeper.ClientCnxn.<init>(

at org.apache.zookeeper.ZooKeeper.<init>(

at org.hbase.async.HBaseClient$ZKClient.connectZK(


at org.hbase.async.HBaseClient.locateRegion(

at org.hbase.async.HBaseClient.sendRpcToRegion(

at org.hbase.async.HBaseClient.ensureTableFamilyExists(

at org.hbase.async.HBaseClient.ensureTableExists(

at net.opentsdb.core.TSDB.checkNecessaryTablesExist(


On Sun, May 11, 2014 at 1:57 PM, Eric Newton <> wrote:

> It is being maintained.  I have tried very hard not to modify the core
> OpenTSDB to support it.  But, it would be nice if we could define a
> storage-independent layer to which it could adhere.
> I don't believe the OTSDB team is interested, but a basic scalable
> back-end abstraction would be nice.  As would a standard java build
> environment, but that doesn't seem to be wanted, either.
> We could work towards a common storage abstraction, which would be a
> reasonable request.
> Zipkin does a good job of being storage independent.  I would work towards
> their model.
> -Eric
> On May 11, 2014 10:28 AM, "Arshak Navruzyan" <> wrote:
>> I noticed Eric Newton's opentsdb adapter for Accumulo.  Is this still
>> being maintained?
>> Also wondering if the StumbleUpon folks are willing to merge it in as an
>> alternative to HBase back end.
>> Thanks
>> Arshak

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