LogEntryIterator(Credentials creds) throws IOException, KeeperException, InterruptedException {
zookeeperEntries = getLogEntries(creds, RootTable.EXTENT).iterator();
rootTableEntries =
getLogEntries(creds, new KeyExtent(new Text(MetadataTable.ID), null, null)).iterator();
try {
Scanner scanner =
HdfsZooInstance.getInstance()
.getConnector(creds.getPrincipal(), creds.getToken())
.createScanner(MetadataTable.NAME, Authorizations.EMPTY);
log.info("Setting range to " + MetadataSchema.TabletsSection.getRange());
scanner.setRange(MetadataSchema.TabletsSection.getRange());
scanner.fetchColumnFamily(LogColumnFamily.NAME);
metadataEntries = scanner.iterator();
} catch (Exception ex) {
throw new IOException(ex);
}
}
protected static synchronized Writer getWriter(Credentials credentials) {
Writer replicationTable = writers.get(credentials);
if (replicationTable == null) {
Instance inst = HdfsZooInstance.getInstance();
Connector conn;
try {
conn = inst.getConnector(credentials.getPrincipal(), credentials.getToken());
} catch (AccumuloException | AccumuloSecurityException e) {
throw new RuntimeException(e);
}
configureMetadataTable(conn, MetadataTable.NAME);
replicationTable = new Writer(inst, credentials, MetadataTable.ID);
writers.put(credentials, replicationTable);
}
return replicationTable;
}
MetaDataTableScanner(
Instance instance,
Credentials credentials,
Range range,
CurrentState state,
String tableName) {
// scan over metadata table, looking for tablets in the wrong state based on the live servers
// and online tables
try {
Connector connector =
instance.getConnector(credentials.getPrincipal(), credentials.getToken());
mdScanner = connector.createBatchScanner(tableName, Authorizations.EMPTY, 8);
configureScanner(mdScanner, state);
mdScanner.setRanges(Collections.singletonList(range));
iter = mdScanner.iterator();
} catch (Exception ex) {
if (mdScanner != null) mdScanner.close();
iter = null;
mdScanner = null;
throw new RuntimeException(ex);
}
}