[
https://issues.apache.org/jira/browse/HBASE-5351?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
stack updated HBASE-5351:
-------------------------
Status: Patch Available (was: Open)
> hbase completebulkload to a new table fails in a race
> -----------------------------------------------------
>
> Key: HBASE-5351
> URL: https://issues.apache.org/jira/browse/HBASE-5351
> Project: HBase
> Issue Type: Bug
> Components: mapreduce
> Affects Versions: 0.92.0, 0.94.0
> Reporter: Gregory Chanan
> Assignee: Gregory Chanan
> Attachments: HBASE-5351-v1.patch, HBASE-5351-v2.patch,
> HBASE-5351.patch
>
>
> I have a test that tests vanilla use of importtsv with importtsv.bulk.output
> option followed by completebulkload to a new table.
> This sometimes fails as follows:
> 11/12/19 15:02:39 WARN client.HConnectionManager$HConnectionImplementation:
> Encountered problems when prefetch META table:
> org.apache.hadoop.hbase.TableNotFoundException: Cannot find row in .META. for
> table: ml_items_copy, row=ml_items_copy,,99999999999999
> at org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:157)
> at org.apache.hadoop.hbase.client.MetaScanner.access$000(MetaScanner.java:52)
> at org.apache.hadoop.hbase.client.MetaScanner$1.connect(MetaScanner.java:130)
> at org.apache.hadoop.hbase.client.MetaScanner$1.connect(MetaScanner.java:127)
> at
> org.apache.hadoop.hbase.client.HConnectionManager.execute(HConnectionManager.java:359)
> at org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:127)
> at org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:103)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.prefetchRegionCache(HConnectionManager.java:875)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:929)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:817)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:781)
> at org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:247)
> at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:211)
> at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:171)
> at
> org.apache.hadoop.hbase.mapreduce.LoadIncrementalHFiles.createTable(LoadIncrementalHFiles.java:673)
> at
> org.apache.hadoop.hbase.mapreduce.LoadIncrementalHFiles.run(LoadIncrementalHFiles.java:697)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:69)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:83)
> at
> org.apache.hadoop.hbase.mapreduce.LoadIncrementalHFiles.main(LoadIncrementalHFiles.java:707)
> The race appears to be calling HbAdmin.createTableAsync(htd, keys) and then
> creating an HTable object before that call has actually completed.
> The following change to
> /src/main/java/org/apache/hadoop/hbase/mapreduce/LoadIncrementalHFiles.java
> appears to fix the problem, but I have not been able to reproduce the race
> reliably, in order to write a test.
> {code}
> - HTable table = new HTable(this.cfg, tableName);
> -
> - HConnection conn = table.getConnection();
> int ctr = 0;
> - while (!conn.isTableAvailable(table.getTableName()) &&
> (ctr<TABLE_CREATE_MA
> + while (!this.hbAdmin.isTableAvailable(tableName) &&
> (ctr<TABLE_CREATE_MAX_R
> {code}
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