Hi, I went through the config values as per the defaults XML file (still going through it again now based on what is actually in the code, i.e. those not in defaults). Here is what I found:
hbase.master.balancer.period - Only used in hbase-default.xml? hbase.regions.percheckin, hbase.regions.slop - Some tests still have it but not used anywhere else zookeeper.pause, zookeeper.retries - Never used? Only in hbase-defaults.xml And then there are differences between hardcoded and XML based defaults: hbase.client.pause - XML: 1000, hardcoded: 2000 (HBaseClient) and 30 * 1000 (HBaseAdmin) hbase.client.retries.number - XML: 10, hardcoded 5 (HBaseAdmin) and 2 (HMaster) hbase.hstore.blockingStoreFiles - XML: 7, hardcoded: -1 hbase.hstore.compactionThreshold - XML: 3, hardcoded: 2 hbase.regionserver.global.memstore.lowerLimit - XML: 0.35, hardcoded: 0.25 hbase.regionserver.handler.count - XML: 25, hardcoded: 10 hbase.regionserver.msginterval - XML: 3000, hardcoded: 1000 hbase.rest.port - XML: 8080, hardcoded: 9090 hfile.block.cache.size - XML: 0.2, hardcoded: 0.0 Finally, some keys are already in HConstants, some are in local classes and others used as literals. There is an issue open to fix this though. Just saying. Thoughts? Thanks, Lars
