janusgraph with HBase

[Ajay Srivastava]

Hi,

Anyone is running janusgraph with Hbase ?

I am trying to create graph schema and getting error because of conflicting guava jars in janusgraph and Hbase.

scala -classpath /root/dev/External_jars/gremlin-core-3.2.5.jar:/root/dev/External_jars/gremlin-scala_2.11-3.2.4.12.jar:/root/dev/External_jars/shapeless_2.11-2.3.2.jar:/root/hbase-1.2.4/lib/*:/root/janusgraph-0.1.1-hadoop2/lib/* graphSchema.scala

java.lang.NoSuchMethodError: com.google.common.base.Stopwatch.createStarted()Lcom/google/common/base/Stopwatch;

Any idea, how can I resolve this problem ?

Regards,

Ajay

[HadoopMarc]

Hi Ajay,

You do not need the /root/hbase-1.2.4/lib/* part of your classpath, on the contrary, it may be the culprit. /root/janusgraph-0.1.1-hadoop2/lib/* contains all hbase jars and dependencies that janusgraph with hbase needs. You do need the directory with hbase config files on your classpath, though (e.g./etc/hbase).

Hope this helps,

Marc

Op donderdag 21 september 2017 20:06:34 UTC+2 schreef Ajay Srivastava:

[Ajay Srivastava]

Hi Marc,

If I remove hbase lib jars then hbase gets higher version of guava (guava-20) and I get following error in both of these cases, with and without base conflict in path -

scala -classpath /root/dev/External_jars/gremlin-core-3.2.5.jar:/root/dev/External_jars/gremlin-scala_2.11-3.2.4.12.jar:/root/dev/External_jars/shapeless_2.11-2.3.2.jar:/root/janusgraph-0.1.1-hadoop2/lib/*:/root/hbase-1.2.4/conf/* janusSchema.scala

scala -classpath /root/dev/External_jars/gremlin-core-3.2.5.jar:/root/dev/External_jars/gremlin-scala_2.11-3.2.4.12.jar:/root/dev/External_jars/shapeless_2.11-2.3.2.jar:/root/janusgraph-0.1.1-hadoop2/lib/* janusSchema.scala

Caused by: java.lang.IllegalAccessError: tried to access method com.google.common.base.Stopwatch.<init>()V from class org.apache.hadoop.hbase.zookeeper.MetaTableLocator

at org.apache.hadoop.hbase.zookeeper.MetaTableLocator.blockUntilAvailable(MetaTableLocator.java:604)

at org.apache.hadoop.hbase.zookeeper.MetaTableLocator.blockUntilAvailable(MetaTableLocator.java:588)

at org.apache.hadoop.hbase.zookeeper.MetaTableLocator.blockUntilAvailable(MetaTableLocator.java:561)

at org.apache.hadoop.hbase.client.ZooKeeperRegistry.getMetaRegionLocation(ZooKeeperRegistry.java:61)

at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateMeta(ConnectionManager.java:1211)

at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1178)

at org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.getRegionLocations(RpcRetryingCallerWithReadReplicas.java:305)

at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:156)

at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:60)

at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:210)

... 53 more

Regards,

Ajay

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[Ajay Srivastava]

Marc,

I checked gremlin.sh to see how classpath was passed to it. I formed classpath in similar way and the problem got resolved.

Thanks.

Regards,

Ajay

 

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