NoServerForRegionException stalls write pipeline
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Key: HBASE-3975
URL: https://issues.apache.org/jira/browse/HBASE-3975
Project: HBase
Issue Type: Bug
Components: client
Affects Versions: 0.90.3, 0.89.20100924, 0.92.0
Reporter: Nicolas Spiegelberg
Assignee: Nicolas Spiegelberg
When we process a batch of puts, the current algorithm basically goes like this:
1. Find all servers for the Put requests
2. Partition Puts by servers
3. Make requests
4. Collect success/error results
If we throw an IOE in step 1 or 2, we will abort the whole batch operation. In
our case, this was an NoServerForRegionException due to region rebalancing.
However, the asynchronous put case normally has requests going to a wide
variety of servers. We should fail all the put requests that throw an IOE in
Step 1 but continue to try all the put requests that succeed at this stage.
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