Strange behavior with Java API

Curtis_Caravone · March 2, 2011, 2:05am

Hi,

I'm trying out elasticsearch (0.15.0) through the Java API. To do so, I
wrote a simple unit test that starts an embedded instance, indexes a
document, then searches for the document:

gist.github.com

https://gist.github.com/caravone/b204814d5f26b7040cc6

ElasticSearchLocalNodeTest.java

import org.junit.Test

import static junit.framework.Assert.*
import org.elasticsearch.client.Client
import org.elasticsearch.node.Node
import org.junit.Before
import org.elasticsearch.node.NodeBuilder
import org.elasticsearch.action.count.CountRequest
import org.junit.After
import static org.elasticsearch.client.Requests.*

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If I remove the WriteConsistencyLevel.QUORUM setting from the indexing
operation, then about half of the time, even after a refresh, I fail to find
the document at search time (I thought the default consistency level was
QUORUM or ALL).

If I change the write consistency to WriteConsistencyLevel.ALL, then the
test seems to hang at the indexing step.

Any ideas?

Curtis

kimchy · March 2, 2011, 3:13am

Heya, setting the write consistency is not relevant to this case (since the index request will wait for at least one shard to be available already, and with 1 replica, it does not matter). But, there is a problem (only applies when a new index is being allocated): Searching while an index is being allocated and no active shards exists within a "shard replication group" can cause search "misses" · Issue #736 · elastic/elasticsearch · GitHub (already fixed).

Note, if you use the cluster health API after you create the index and wait for yellow status, then this problem will not happen.

-shay.banon
On Wednesday, March 2, 2011 at 4:05 AM, Curtis Caravone wrote:

Hi,

I'm trying out elasticsearch (0.15.0) through the Java API. To do so, I wrote a simple unit test that starts an embedded instance, indexes a document, then searches for the document: Unit test with embedded elasticsearch · GitHub

If I remove the WriteConsistencyLevel.QUORUM setting from the indexing operation, then about half of the time, even after a refresh, I fail to find the document at search time (I thought the default consistency level was QUORUM or ALL).

If I change the write consistency to WriteConsistencyLevel.ALL, then the test seems to hang at the indexing step.

Any ideas?

Curtis