Dear ArangoDB Google Group,
I hope this message finds you well. I am writing to seek assistance and insights regarding the memory usage within our ArangoDB cluster. We are currently experiencing variations in memory consumption across different nodes in our cluster, and we would appreciate your expertise in addressing this issue. Here is an overview of our cluster's configuration and the specific concerns we have: Cluster Overview: - ArangoDB Version: 3.5.2 - 6 Nodes in the cluster - Each collection consists of 12 shards with a replication factor of 2 - Each node is equipped with 128GB of RAM Specific Concerns: 1. Some nodes are consistently maintaining RAM usage between 80-90%, while others remain in the range of 40-50%. We are concerned about the disparity in memory consumption among nodes. 2. The largest collection contains approximately 150 million documents, while the total data volume across all collections in the cluster is around 400-450 million documents. 3. Interestingly, we noticed that the three nodes serving as Agency roles are among the ones with higher memory usage. We are curious if there is any correlation between the Agency roles and high memory consumption. 4. When inspecting the distribution of primary shards across nodes, we observed that nodes with lower memory usage tend to host fewer primary shards. We wonder if there is a relationship between the distribution of primary shards and memory usage. 5. In an attempt to address the memory issues, we manually initiated data shard migration from the heavily loaded nodes to the less busy ones. However, the results were not as effective as expected. We would appreciate any guidance or best practices for optimizing shard migrations within our cluster. We believe that your valuable insights and suggestions can help us better understand and address the memory-related challenges we are currently facing. Any advice, recommendations, or potential explanations for the observed behavior would be greatly appreciated. Thank you for your time and assistance. We look forward to your response and any support you can provide in optimizing our ArangoDB cluster's performance. Best regards, Kevin -- You received this message because you are subscribed to the Google Groups "ArangoDB" group. To unsubscribe from this group and stop receiving emails from it, send an email to arangodb+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/arangodb/70fd6c43-9478-436f-a17c-6ba266a7d902n%40googlegroups.com.
