dlmarion commented on code in PR #5775:
URL: https://github.com/apache/accumulo/pull/5775#discussion_r2316702081
##########
core/src/main/java/org/apache/accumulo/core/rpc/clients/TServerClient.java:
##########
@@ -60,16 +63,45 @@
public interface TServerClient<C extends TServiceClient> {
static final String DEBUG_HOST = "org.apache.accumulo.client.rpc.debug.host";
+ static final String DEBUG_RG = "org.apache.accumulo.client.rpc.debug.group";
- Pair<String,C> getThriftServerConnection(ClientContext context, boolean
preferCachedConnections)
- throws TTransportException;
+ Pair<String,C> getThriftServerConnection(ClientContext context, boolean
preferCachedConnections,
+ ResourceGroupPredicate rgp) throws TTransportException;
default Pair<String,C> getThriftServerConnection(Logger LOG,
ThriftClientTypes<C> type,
ClientContext context, boolean preferCachedConnections, AtomicBoolean
warned,
- ThriftService service) throws TTransportException {
+ ThriftService service, ResourceGroupPredicate rgp) throws
TTransportException {
checkArgument(context != null, "context is null");
final String debugHost = System.getProperty(DEBUG_HOST, null);
+ final String debugRG = System.getProperty(DEBUG_RG, null);
+
+ if (debugHost != null && debugRG != null) {
+ LOG.warn("System properties {} and {} are both set. If set incorrectly
then"
+ + " this client may not find a server to connect to.", DEBUG_HOST,
DEBUG_RG);
+ }
+
+ if (debugRG != null) {
+ if (type == ThriftClientTypes.CLIENT || type ==
ThriftClientTypes.COMPACTOR
+ || type == ThriftClientTypes.SERVER_PROCESS || type ==
ThriftClientTypes.TABLET_INGEST
+ || type == ThriftClientTypes.TABLET_MGMT || type ==
ThriftClientTypes.TABLET_SCAN
+ || type == ThriftClientTypes.TABLET_SERVER) {
+ final ResourceGroupId dgid = ResourceGroupId.of(debugRG);
+ if (rgp.test(dgid)) {
+ // its safe to potentially narrow the predicate
+ LOG.debug("System property '{}' set to '{}' overriding predicate
argument", DEBUG_RG,
+ debugRG);
+ rgp = r -> r.equals(dgid);
+ } else {
+ LOG.warn("System property '{}' set to '{}' does not intersect with
predicate argument."
+ + " Ignoring degug system property.", DEBUG_RG, debugRG);
+ }
+ } else {
+ LOG.debug(
+ "System property '{}' set to '{}' but ignored when making RPCs to
management servers",
+ DEBUG_RG, debugRG);
+ }
+ }
Review Comment:
@keith-turner - I put up a PR in my repo. See
https://github.com/dlmarion/accumulo/pull/57. I can merge that into this branch.
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