Bulk indexing nearing memory limits

[bwmcbride]

When running the bulk indexer on the full LR dataset, full garbage collects are occurring with increasing frequency as the process progresses. They are now sufficiently frequent that I am concerned the indexer will fail sometime soon as the size of the dataset increases.

In production the indexer is run with 24G of heap space. There is not much, if any room, to give it more.

Need to explore whether there is a memory leak or whether a more scalable approach to bulk indexing is needed.