The Split API requires a ResizeRequest instance.
A ResizeRequest requires two string arguments:
ResizeRequest request = new ResizeRequest("target_index","source_index");
request.setResizeType(ResizeType.SPLIT);
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The target index (first argument) to split the source index (second argument) into
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The resize type needs to be set to SPLIT
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The following arguments can optionally be provided:
request.timeout(TimeValue.timeValueMinutes(2));
request.timeout("2m");
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Timeout to wait for the all the nodes to acknowledge the index is opened
as a TimeValue
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Timeout to wait for the all the nodes to acknowledge the index is opened
as a String
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request.masterNodeTimeout(TimeValue.timeValueMinutes(1));
request.masterNodeTimeout("1m");
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Timeout to connect to the master node as a TimeValue
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Timeout to connect to the master node as a String
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request.setWaitForActiveShards(2);
request.setWaitForActiveShards(ActiveShardCount.DEFAULT);
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The number of active shard copies to wait for before the split index API
returns a response, as an int
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The number of active shard copies to wait for before the split index API
returns a response, as an ActiveShardCount
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request.getTargetIndexRequest().settings(Settings.builder()
.put("index.number_of_shards", 4));
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The settings to apply to the target index, which include the number of
shards to create for it
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request.getTargetIndexRequest().alias(new Alias("target_alias"));
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The aliases to associate the target index with
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Synchronous Execution
edit
ResizeResponse resizeResponse = client.indices().split(request);
Asynchronous Execution
edit The asynchronous execution of a split index request requires both the ResizeRequest
instance and an ActionListener instance to be passed to the asynchronous
method:
client.indices().splitAsync(request,listener);
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The ResizeRequest to execute and the ActionListener to use when
the execution completes
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The asynchronous method does not block and returns immediately. Once it is
completed the ActionListener is called back using the onResponse method
if the execution successfully completed or using the onFailure method if
it failed.
A typical listener for ResizeResponse looks like:
ActionListener<ResizeResponse> listener = new ActionListener<ResizeResponse>() {
@Override
public void onResponse(ResizeResponse resizeResponse) {
}
@Override
public void onFailure(Exception e) {
}
};
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Called when the execution is successfully completed. The response is
provided as an argument
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Called in case of failure. The raised exception is provided as an argument
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The returned ResizeResponse allows to retrieve information about the
executed operation as follows:
boolean acknowledged = resizeResponse.isAcknowledged();
boolean shardsAcked = resizeResponse.isShardsAcknowledged();
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Indicates whether all of the nodes have acknowledged the request
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Indicates whether the requisite number of shard copies were started for
each shard in the index before timing out
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