/**
* Checks that cache is empty.
*
* @param cache Cache to check.
* @throws org.apache.ignite.internal.IgniteInterruptedCheckedException If interrupted while
* sleeping.
*/
@SuppressWarnings({"ErrorNotRethrown", "TypeMayBeWeakened"})
private void checkEmpty(IgniteCache<String, String> cache)
throws IgniteInterruptedCheckedException {
for (int i = 0; i < 3; i++) {
try {
assertTrue(!cache.iterator().hasNext());
break;
} catch (AssertionError e) {
if (i == 2) throw e;
info(">>> Cache is not empty, flushing evictions.");
U.sleep(1000);
}
}
}
/**
* Executes command using {@code shell} channel.
*
* @param ses SSH session.
* @param cmd Command.
* @throws JSchException In case of SSH error.
* @throws IOException If IO error occurs.
* @throws IgniteInterruptedCheckedException If thread was interrupted while waiting.
*/
private void shell(Session ses, String cmd)
throws JSchException, IOException, IgniteInterruptedCheckedException {
ChannelShell ch = null;
try {
ch = (ChannelShell) ses.openChannel("shell");
ch.connect();
try (PrintStream out = new PrintStream(ch.getOutputStream(), true)) {
out.println(cmd);
U.sleep(1000);
}
} finally {
if (ch != null && ch.isConnected()) ch.disconnect();
}
}
/**
* Calls garbage collector and wait.
*
* @throws Exception if any thread has interrupted the current thread while waiting.
*/
private void gc() throws Exception {
Runtime rt = Runtime.getRuntime();
long freeMem0 = rt.freeMemory();
long freeMem = Long.MAX_VALUE;
int cnt = 0;
while (freeMem0 < freeMem && cnt < GC_CALL_CNT) {
System.gc();
U.sleep(WAIT_TIME);
cnt++;
freeMem = freeMem0;
freeMem0 = rt.freeMemory();
}
}
/**
* 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;
}