[jira] [Created] (HBASE-5768) Question about configuring HBase file size

[Ionut Ignatescu (Created) (JIRA)]

Question about configuring HBase file size
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 Key: HBASE-5768
 URL: https://issues.apache.org/jira/browse/HBASE-5768
 Project: HBase
  Issue Type: Task
Reporter: Ionut Ignatescu


My use-case: I have several HBase tables in which entries are pushed 
constantly(300k entries/5min,6-7Gb/day). I started with tables splitted in 32 
regions.
File size is currently set to 1Gb. I'm using this tables to perfom real-time 
scans via a web app. 
Problem: Sometimes,but pretty frequently tables are frozen and I get scanner 
timeout exception.I found in logs that many splits and compactions are 
performing and I think this are the cause. If I stop pushing data into tables, 
are scans are running ok.
Could you provide me some advices to do in order to avoid this problem?

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[jira] [Created] (HBASE-5362) ZK connection leak

[Ionut Ignatescu (Created) (JIRA)]

ZK connection leak
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 Key: HBASE-5362
 URL: https://issues.apache.org/jira/browse/HBASE-5362
 Project: HBase
  Issue Type: Bug
  Components: mapreduce
Affects Versions: 0.90.3
Reporter: Ionut Ignatescu


I have an application like a scheduler that starts periodically some MR jobs 
that reads from one HBase table and write in more tables, changing the row key 
and the columns list. 
I have encounted a problem with this: after each MR job, I have +1 connections 
open to ZK and after a period of time, I have received IOException. I saw that 
I am not the first that had had this problem, but I didn't see any fix. No in 
HBase 0.90.4, nor in HBase 0.92.
To fix this issue I wrote a custom TableInputFormat that forces to close the 
connection to ZK after each getSplits call. 
Also, the initTableMapperJob was overwritten.
I found an open JIRA issue here: 
https://issues.apache.org/jira/browse/HBASE-3792

Regards,
Ionut I. 

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