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POCouchbase: net.spy.memcached.internal.CheckedOperationTimeoutException
 

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  1. POCouchbase: net.spy.memcached.internal.CheckedOperationTimeoutException
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    <p>I'm loading local Couchbase instance with application specific json objects.</p> <p>Relevant code is:</p> <pre><code>CouchbaseClient getCouchbaseClient() { List&lt;URI&gt; uris = new LinkedList&lt;URI&gt;(); uris.add(URI.create("http://localhost:8091/pools")); CouchbaseConnectionFactoryBuilder cfb = new CouchbaseConnectionFactoryBuilder(); cfb.setFailureMode(FailureMode.Retry); cfb.setMaxReconnectDelay(1500); // to enqueue an operation cfb.setOpTimeout(10000); // wait up to 10 seconds for an operation to succeed cfb.setOpQueueMaxBlockTime(5000); // wait up to 5 seconds when trying to // enqueue an operation return new CouchbaseClient(cfb.buildCouchbaseConnection(uris, "my-app-bucket", "")); } </code></pre> <p>Method to store entry (I'm using suggestions from <a href="http://www.couchbase.com/docs/couchbase-sdk-java-1.0/java-sdk-bulk-load-and-backoff.html" rel="nofollow">Bulk Load and Exponential Backoff</a>):</p> <pre><code> void continuosSet(CouchbaseClient cache, String key, int exp, Object value, int tries) { OperationFuture&lt;Boolean&gt; result = null; OperationStatus status = null; int backoffexp = 0; do { if (backoffexp &gt; tries) { throw new RuntimeException(MessageFormat.format("Could not perform a set after {0} tries.", tries)); } result = cache.set(key, exp, value); try { if (result.get()) { break; } else { status = result.getStatus(); LOG.warn(MessageFormat.format("Set failed with status \"{0}\" ... retrying.", status.getMessage())); if (backoffexp &gt; 0) { double backoffMillis = Math.pow(2, backoffexp); backoffMillis = Math.min(1000, backoffMillis); // 1 sec max Thread.sleep((int) backoffMillis); LOG.warn("Backing off, tries so far: " + tries); } backoffexp++; } } catch (ExecutionException e) { LOG.error("ExecutionException while doing set: " + e.getMessage()); } catch (InterruptedException e) { LOG.error("InterruptedException while doing set: " + e.getMessage()); } } while (status != null &amp;&amp; status.getMessage() != null &amp;&amp; status.getMessage().indexOf("Temporary failure") &gt; -1); } </code></pre> <p>When continuosSet method called for a large amount of objects to store (single thread) e.g.</p> <pre><code>CouchbaseClient cache = getCouchbaseClient(); do { SerializableData data = queue.poll(); if (data != null) { final String key = data.getClass().getSimpleName() + data.getId(); continuosSet(cache, key, 0, gson.toJson(data, data.getClass()), 100); ... </code></pre> <p>it generates CheckedOperationTimeoutException inside of continuosSet method in result.get() operation.</p> <pre><code>Caused by: net.spy.memcached.internal.CheckedOperationTimeoutException: Timed out waiting for operation - failing node: 127.0.0.1/127.0.0.1:11210 at net.spy.memcached.internal.OperationFuture.get(OperationFuture.java:160) ~[spymemcached-2.8.12.jar:2.8.12] at net.spy.memcached.internal.OperationFuture.get(OperationFuture.java:133) ~[spymemcached-2.8.12.jar:2.8.12] </code></pre> <p>Can someone shed light into this how to overcome and recover from this situation? Is there a good technique/workaround on how to bulk load in Java client for Couchbase? I already explored documentation <a href="http://www.couchbase.com/docs/couchbase-devguide-2.0/populating-cb.html" rel="nofollow">Performing a Bulk Set</a> which is unfortunately for PHP Couchbase client.</p>
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