Stephen Yuan Jiang created HBASE-13254:
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Summary: EnableTableHandler#prepare would not throw
TableNotFoundException during recovery
Key: HBASE-13254
URL: https://issues.apache.org/jira/browse/HBASE-13254
Project: HBase
Issue Type: Bug
Reporter: Stephen Yuan Jiang
Assignee: Stephen Yuan Jiang
Priority: Minor
During recovery, when EnableTableHandler#prepare() is called, If the table does
not exist, it marks the table as deleted and does NOT throw
TableNotFoundException. The result is that the table lock is released and the
caller has no knowledge that the table not exist or already deleted, it would
continue the next step.
{code}
public EnableTableHandler prepare()
throws TableNotFoundException, TableNotDisabledException, IOException {
...
try {
// Check if table exists
if (!MetaTableAccessor.tableExists(this.server.getConnection(),
tableName)) {
// retainAssignment is true only during recovery. In normal case it is
false
if (!this.skipTableStateCheck) {
throw new TableNotFoundException(tableName);
}
this.assignmentManager.getTableStateManager().setDeletedTable(tableName);
}
...
}
{code}
However,look at the recovery code that calls the EnableTableHandler#prepare
function, AssignmentManager#recoverTableInEnablingState() expects
TableNotFoundException so that it can skip the table.
{code}
private void recoverTableInEnablingState()
throws KeeperException, IOException {
Set<TableName> enablingTables = tableStateManager.
getTablesInStates(TableState.State.ENABLING);
if (enablingTables.size() != 0) {
for (TableName tableName : enablingTables) {
// Recover by calling EnableTableHandler
LOG.info("The table " + tableName
+ " is in ENABLING state. Hence recovering by moving the table"
+ " to ENABLED state.");
// enableTable in sync way during master startup,
// no need to invoke coprocessor
EnableTableHandler eth = new EnableTableHandler(this.server, tableName,
this, tableLockManager, true);
try {
eth.prepare();
} catch (TableNotFoundException e) {
LOG.warn("Table " + tableName + " not found in hbase:meta to
recover.");
continue;
}
eth.process();
}
}
}
{code}
The proposed fix is always throw TableNotFoundException in
EnableTableHandler#prepare if the table does not exist.
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