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https://issues.apache.org/jira/browse/HBASE-10079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13839554#comment-13839554
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Jonathan Hsieh commented on HBASE-10079:
----------------------------------------
Here's the dropped "threads" stack dump -- each one of these corresponds to a
thread that didn't run.
{code}
Exception in thread "Thread-58" java.lang.IllegalStateException: test was
supposed to be in the cache
at
org.apache.hadoop.hbase.TableName.createTableNameIfNecessary(TableName.java:337)
at org.apache.hadoop.hbase.TableName.valueOf(TableName.java:385)
at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:165)
at
org.apache.hadoop.hbase.client.HTableFactory.createHTableInterface(HTableFactory.java:39)
at
org.apache.hadoop.hbase.client.HTablePool.createHTable(HTablePool.java:271)
at
org.apache.hadoop.hbase.client.HTablePool.findOrCreateTable(HTablePool.java:201)
at
org.apache.hadoop.hbase.client.HTablePool.getTable(HTablePool.java:180)
at IncrementBlaster$1.run(IncrementBlaster.java:131)
{code}
> Increments lost after flush
> ----------------------------
>
> Key: HBASE-10079
> URL: https://issues.apache.org/jira/browse/HBASE-10079
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 0.96.1
> Reporter: Jonathan Hsieh
> Priority: Blocker
> Fix For: 0.96.1
>
> Attachments: 10079.v1.patch
>
>
> Testing 0.96.1rc1.
> With one process incrementing a row in a table, we increment single col. We
> flush or do kills/kill-9 and data is lost. flush and kill are likely the
> same problem (kill would flush), kill -9 may or may not have the same root
> cause.
> 5 nodes
> hadoop 2.1.0 (a pre cdh5b1 hdfs).
> hbase 0.96.1 rc1
> Test: 250000 increments on a single row an single col with various number of
> client threads (IncrementBlaster). Verify we have a count of 250000 after
> the run (IncrementVerifier).
> Run 1: No fault injection. 5 runs. count = 250000. on multiple runs.
> Correctness verified. 1638 inc/s throughput.
> Run 2: flushes table with incrementing row. count = 246875 !=250000.
> correctness failed. 1517 inc/s throughput.
> Run 3: kill of rs hosting incremented row. count = 243750 != 250000.
> Correctness failed. 1451 inc/s throughput.
> Run 4: one kill -9 of rs hosting incremented row. 246878.!= 250000.
> Correctness failed. 1395 inc/s (including recovery)
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