/** * Sends cache query response. * * @param nodeId Node to send response. * @param res Cache query response. * @param timeout Message timeout. * @return {@code true} if response was sent, {@code false} otherwise. */ private boolean sendQueryResponse(UUID nodeId, GridCacheQueryResponse res, long timeout) { ClusterNode node = cctx.node(nodeId); if (node == null) return false; int attempt = 1; IgniteCheckedException err = null; while (!Thread.currentThread().isInterrupted()) { try { if (log.isDebugEnabled()) log.debug("Send query response: " + res); Object topic = topic(nodeId, res.requestId()); cctx.io() .sendOrderedMessage( node, topic, res, cctx.ioPolicy(), timeout > 0 ? timeout : Long.MAX_VALUE); return true; } catch (ClusterTopologyCheckedException ignored) { if (log.isDebugEnabled()) log.debug( "Failed to send query response since node left grid [nodeId=" + nodeId + ", res=" + res + "]"); return false; } catch (IgniteCheckedException e) { if (err == null) err = e; if (Thread.currentThread().isInterrupted()) break; if (attempt < RESEND_ATTEMPTS) { if (log.isDebugEnabled()) log.debug( "Failed to send queries response (will try again) [nodeId=" + nodeId + ", res=" + res + ", attempt=" + attempt + ", err=" + e + "]"); if (!Thread.currentThread().isInterrupted()) try { U.sleep(RESEND_FREQ); } catch (IgniteInterruptedCheckedException e1) { U.error( log, "Waiting for queries response resending was interrupted (response will not be sent) " + "[nodeId=" + nodeId + ", response=" + res + "]", e1); return false; } } else { U.error( log, "Failed to sender cache response [nodeId=" + nodeId + ", response=" + res + "]", err); return false; } } attempt++; } return false; }