fix class loader issue with Elasticsearch's "names.txt" not being found

[albertocsm]

its a TCCL problem...

[mateilucianstefan]

org.elasticsearch.env.FailedToResolveConfigException: Failed to resolve config path [names.txt], tried file path [names.txt], path file [~workspace/presto-main/config/names.txt], and classpath at org.elasticsearch.env.Environment.resolveConfig(Environment.java:242) at org.elasticsearch.node.internal.InternalSettingsPreparer.prepareSettings(InternalSettingsPreparer.java:140) at org.elasticsearch.node.internal.InternalSettingsPreparer.prepareSettings(InternalSettingsPreparer.java:60) at org.elasticsearch.client.transport.TransportClient.(TransportClient.java:159) at org.elasticsearch.client.transport.TransportClient.(TransportClient.java:125) at com.facebook.presto.elasticsearch.ElasticsearchClient.getMappings(ElasticsearchClient.java:156) at com.facebook.presto.elasticsearch.ElasticsearchClient.getColumns(ElasticsearchClient.java:178) at com.facebook.presto.elasticsearch.ElasticsearchClient.updateTableColumns(ElasticsearchClient.java:277) at com.facebook.presto.elasticsearch.ElasticsearchClient.updateSchemas(ElasticsearchClient.java:128) at com.facebook.presto.elasticsearch.ElasticsearchClient.getTable(ElasticsearchClient.java:104) at com.facebook.presto.elasticsearch.ElasticsearchMetadata.getTableHandle(ElasticsearchMetadata.java:77) at com.facebook.presto.elasticsearch.ElasticsearchMetadata.getTableHandle(ElasticsearchMetadata.java:45) at com.facebook.presto.metadata.MetadataManager.getTableHandle(MetadataManager.java:281) at com.facebook.presto.sql.analyzer.StatementAnalyzer.visitShowColumns(StatementAnalyzer.java:317) [...]

[albertocsm]

the workaround is copying elasticsearch's names.txt to /var/presto/data/config