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https://issues.apache.org/jira/browse/HBASE-24420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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wuchang reassigned HBASE-24420:
-------------------------------
Assignee: wuchang
> BulkLoad Will Fall Into Unbelievable Retry Attempt in Some case
> ---------------------------------------------------------------
>
> Key: HBASE-24420
> URL: https://issues.apache.org/jira/browse/HBASE-24420
> Project: HBase
> Issue Type: Bug
> Reporter: wuchang
> Assignee: wuchang
> Priority: Major
> Attachments: 24420.patch
>
>
> In https://issues.apache.org/jira/browse/HBASE-14541, the retry logic changed
> from a configurable retry times(by configuration item
> hbase.bulkload.retries.number) to below retry logic to process the issue that
> the RegionSplit happened during bulk load:
>
> {code:java}
> int maxRetries = getConf().getInt("hbase.bulkload.retries.number", 10);
> maxRetries = Math.max(maxRetries, startEndKeys.getFirst().length + 1);
> if (maxRetries != 0 && count >= maxRetries) {
> throw new IOException("Retry attempted " + count +
> " times without completing, bailing out");
> }{code}
> This issue caused another issue in our cluster, that is:
> Our table has *2000* regions and our bulk load failed for an configuration
> issue:
> This failure is caused by a client mis-configuration and cause the
> RegionServer fail to load the HFile, but the response is not thrown as
> exception to client, but marked as a variable `*loaded*` in the
> `*BulkLoadHFileResponse*`
> {code:java}
> message BulkLoadHFileResponse {
> required bool loaded = 1;
> }{code}
> After this failure, the bulk load fall into a retry disaster and after the
> retry reached about 200, our HDFS crashed for OOM.
> {code:java}
> {code}
>
> But during with, the HBase table splits in fact didn't happen ever.
> I think the patch in HBASE-14541 didn't handle the unrecoverable retry case
> and in this case(I think many reason may incur unrecoverable retry) the
> meaningless retry attempts becomes disaster and is un-configurable because we
> cannot change the Region number of our table;
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