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HBASE-28079 Unhandled TableExistsException and NamespaceExistException in BackupSystemTable #5399

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Merged
bbeaudreault merged 2 commits into from
Sep 13, 2023
Merged

HBASE-28079 Unhandled TableExistsException and NamespaceExistException in BackupSystemTable #5399

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HBASE-28079 Unhandled TableExistsException and NamespaceExistExceptio…
bbeaudreault Sep 12, 2023
a6446a7
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bbeaudreault Sep 13, 2023
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20 changes: 17 additions & 3 deletions hbase-backup/src/main/java/org/apache/hadoop/hbase/backup/impl/BackupSystemTable.java
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Original file line number Diff line number Diff line change
Expand Up @@ -43,7 +43,9 @@
import org.apache.hadoop.hbase.CellUtil;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.NamespaceDescriptor;
import org.apache.hadoop.hbase.NamespaceExistException;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableExistsException;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.backup.BackupInfo;
import org.apache.hadoop.hbase.backup.BackupInfo.BackupState;
Expand Down Expand Up @@ -202,17 +204,25 @@ private void checkSystemTable() throws IOException {
Configuration conf = connection.getConfiguration();
if (!admin.tableExists(tableName)) {
TableDescriptor backupHTD = BackupSystemTable.getSystemTableDescriptor(conf);
admin.createTable(backupHTD);
createSystemTable(admin, backupHTD);
}
if (!admin.tableExists(bulkLoadTableName)) {
TableDescriptor blHTD = BackupSystemTable.getSystemTableForBulkLoadedDataDescriptor(conf);
admin.createTable(blHTD);
createSystemTable(admin, blHTD);
}
waitForSystemTable(admin, tableName);
waitForSystemTable(admin, bulkLoadTableName);
}
}

private void createSystemTable(Admin admin, TableDescriptor descriptor) throws IOException {
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@Apache9 Apache9 Sep 13, 2023

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Please add more comments to say why here we could hit table exists exception?

try {
admin.createTable(descriptor);
} catch (TableExistsException e) {
LOG.debug("Table {} already exists, ignoring", descriptor.getTableName(), e);
}
}

private void verifyNamespaceExists(Admin admin) throws IOException {
String namespaceName = tableName.getNamespaceAsString();
NamespaceDescriptor ns = NamespaceDescriptor.create(namespaceName).build();
Expand All @@ -225,7 +235,11 @@ private void verifyNamespaceExists(Admin admin) throws IOException {
}
}
if (!exists) {
admin.createNamespace(ns);
try {
admin.createNamespace(ns);
} catch (NamespaceExistException e) {
LOG.debug("Namespace {} already exists, ignoring", ns.getName(), e);
}
}
}

Expand Down