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https://issues.apache.org/jira/browse/HBASE-19969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16391531#comment-16391531
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Ted Yu commented on HBASE-19969:
--------------------------------
One more comment about the new test :
{code}
+ LOG.debug("f1 has " + TEST_UTIL.countRows(hTable, famName) + " rows");
+ Assert.assertEquals(TEST_UTIL.countRows(hTable, famName), NB_ROWS_IN_BATCH
+ 2 * ADD_ROWS);
{code}
You can store the return value from TEST_UTIL.countRows() in a variable.
The count would not change in between the log and the assertion.
I looped the following tests locally which passed:
{code}
[INFO] Running
org.apache.hadoop.hbase.backup.TestIncrementalBackupMergeWithFailures
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 201.72 s
- in org.apache.hadoop.hbase.backup.TestIncrementalBackupMergeWithFailures
[INFO] Running org.apache.hadoop.hbase.backup.TestBackupMerge
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 164.286
s - in org.apache.hadoop.hbase.backup.TestBackupMerge
{code}
> Improve FT in merge operation
> -----------------------------
>
> Key: HBASE-19969
> URL: https://issues.apache.org/jira/browse/HBASE-19969
> Project: HBase
> Issue Type: Sub-task
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
> Priority: Major
> Attachments: HBASE-19969-v1.patch
>
>
> Some file system operations are not fault tolerant during merge. We delete
> backup data in a backup file system, then copy new data over to backup
> destination. Deletes can be partial, copy can fail as well
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