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[HBASE-13362] set max result size from client only (like caching)? - HBase - [issue]
...With the recent problems we've been seeing client/server result size mismatch, I was thinking: Why was this not a problem with scanner caching?There are two reasons: number of rows is easy t...
http://issues.apache.org/jira/browse/HBASE-13362    Author: Lars Hofhansl, 2015-03-30, 18:03
[HBASE-13303] Fix size calculation of results on the region server - HBase - [issue]
...One of the problems in the parent is due to different size calculation between client and server when HFilev3 is used.Since tags are never shipped to the client in a scan, we can have specia...
http://issues.apache.org/jira/browse/HBASE-13303    Author: Lars Hofhansl, 2015-03-28, 09:28
[HBASE-13352] Add hbase.import.version to Import usage. - HBase - [issue]
...We just tried to export some (small amount of) data out of an 0.94 cluster to 0.98 cluster. We used Export/Import for that.By default we found that the import M/R job correctly reports the n...
http://issues.apache.org/jira/browse/HBASE-13352    Author: Lars Hofhansl, 2015-03-28, 01:21
[HBASE-13333] Renew Scanner Lease without advancing the RegionScanner - HBase - [issue]
...We have a usecase (for Phoenix) where we want to let the server know that the client is still around. Like a client-side heartbeat.Doing a full heartbeat is complicated, but we could add the...
http://issues.apache.org/jira/browse/HBASE-13333    Author: Lars Hofhansl, 2015-03-28, 00:24
[HBASE-13109] Make better SEEK vs SKIP decisions during scanning - HBase - [issue]
...I'm re-purposing this issue to add a heuristic as to when to SEEK and when to SKIP Cells. This has come up in various issues, and I think I have a way to finally fix this now. HBASE-9778, HB...
http://issues.apache.org/jira/browse/HBASE-13109    Author: Lars Hofhansl, 2015-03-26, 01:22
[HBASE-13082] Coarsen StoreScanner locks to RegionScanner - HBase - [issue]
...Continuing where HBASE-10015 left of.We can avoid locking (and memory fencing) inside StoreScanner by deferring to the lock already held by the RegionScanner.In tests this shows quite a scan...
http://issues.apache.org/jira/browse/HBASE-13082    Author: Lars Hofhansl, 2015-03-25, 03:39
[HBASE-13318] RpcServer.Listener.getAddress should be synchronized - HBase - [issue]
...We just saw exceptions like these:Exception in thread "B.DefaultRpcServer.handler=45,queue=0,port=60020" java.lang.NullPointerException at org.apache.hadoop.hbase.ipc.RpcServer$Listener.getA...
http://issues.apache.org/jira/browse/HBASE-13318    Author: Lars Hofhansl, 2015-03-24, 01:14
[HBASE-13297] 0.98 and 1.0: Remove client side result size calculation - HBase - [issue]
...As described in parent, this can lead to missed rows when the client and server calculate different size values.The patch here proposes a backwards compatible patch for 0.98 and 1.0.x.Parent...
http://issues.apache.org/jira/browse/HBASE-13297    Author: Lars Hofhansl, 2015-03-21, 06:14
[HBASE-12976] Set default value for hbase.client.scanner.max.result.size - HBase - [issue]
...Setting scanner caching is somewhat of a black art. It's hard to estimate ahead of time how large the result set will be.I propose we hbase.client.scanner.max.result.size to 2mb. That is goo...
http://issues.apache.org/jira/browse/HBASE-12976    Author: Lars Hofhansl, 2015-03-20, 05:14
[HBASE-13292] Undo parent from 0.98 and 1.0: setting hbase.client.scanner.max.result.size is considered harmful - HBase - [issue]
...Defaulting hbase.client.scanner.max.result.size to 2mb will have to be undone from all branches....
http://issues.apache.org/jira/browse/HBASE-13292    Author: Lars Hofhansl, 2015-03-19, 22:08
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB