+ The state of the shards in the source index are abnormal, you must check the index's health status before shrinking, and it is + recommended to shrink an index when its health status is Green. +
+In order to shrink an existing index, you must first set the index to block write operations.
++ You must first open the index before shrinking it. Depending on the size of the source index, this may take additional time + to complete. The index will be in the Red state while the index is opening. +
++ It's recommended to shrink an index when its health status is Green, because if the index's health status is Yellow, it + may cause problems when initializing the new shrunken index's shards. +
++ When the source index's setting [index.blocks.read_only] is [true], it will be copied to the new shrunken index and then + the new shrunken index's metadata write will be blocked, this will cause the new shrunken index's shards to be unassigned, + you can set the setting to [null] or [false] in the advanced settings bellow. +
++ When shrinking an index, a copy of every shard in the index must reside on the same node, you can use the index setting + `index.routing.allocation.require._*` to relocate the copy of every shard to one node. +
++ Ignore this warning if the copy of every shard in the source index just reside on the same node in some cases, like the + OpenSearch cluster has only one node or the cluster has two nodes and each primary shard in the source index has one + replia. +
+Specify the number of shards for the new shrunken index.
+The number must be a factor of the primary shard count of the source index.
+ + ), + }, + name: "index.number_of_shards", + type: "Select", + options: { + rules: [ + { + validator: (_, value) => { + if (!value || !value.toString().trim() || Number(value) <= 0 || Number(sourceIndex.pri) % value != 0) { + return Promise.reject( + "The number of primary shards in the new shrunken index " + + " must be a positive factor of the number of primary shards in the source index." + ); + } + return Promise.resolve(); + }, + }, + ], + props: { + "data-test-subj": "numberOfShardsInput", + options: numberOfShardsSelectOptions, + placeholder: "Select primary shard count", + }, + }, + }, + { + rowProps: { + label: "Number of replicas", + helpText:
+ Shrink an existing index into a new index with fewer primary shards.{" "}
+
+ Shrink an existing index into a new index with fewer primary shards. + + + Learn more. + EuiIconMock + + (opens in a new tab or window) + + +
++ Specify the number of shards for the new shrunken index. +
++ The number must be a factor of the primary shard count of the source index. +
++ Select aliases or input new aliases. +
+Specify the number of primary shards for the new split index.
+{shardMessage}
+ + ), + }, + name: "index.number_of_shards", + type: "ComboBoxSingle", + options: { + rules: [ + { + trigger: "onBlur", + validator: (rule, value) => { + if (!value || value === "") { + // do not pass the validation + // return a rejected promise with error message + return Promise.reject("Number of shards is required"); + } else if (!this.props.shardsSelectOptions.find((item) => "" + item.label === "" + value)) { + return Promise.reject(`Number of shards ${value} is invalid`); + } + // pass the validation, return a resolved promise + return Promise.resolve(); + }, + }, + ], + props: { + "data-test-subj": "numberOfShardsInput", + options: this.props.shardsSelectOptions, + placeholder: "Specify primary shard count", + onCreateOption: undefined, + }, + }, + }, + { + rowProps: { + label: "Number of replicas", + helpText: REPLICA_NUMBER_MESSAGE, + }, + name: "index.number_of_replicas", + type: "Number", + options: { + props: { + "data-test-subj": "numberOfReplicasInput", + placeholder: "Specify number of replica", + min: 0, + }, + }, + }, + { + name: "aliases", + rowProps: { + label: "Index alias - optional", + helpText: "Allow this index to be referenced by existing aliases or specify a new alias.", + }, + options: { + props: { + refreshOptions: getAlias, + }, + }, + component: WrappedAliasSelect as React.ComponentType+ You must first open the index before splitting it. Depending on the size of the source index, this may take additional time to + complete. The index will be in the Red state while the index is opening. +
+
+
In order to split an existing index, you must first set the index to block write operations.
+
+ Split an existing read-only index into a new index with more primary shards .
+
+ Split an existing read-only index into a new index with more primary shards . + + Learn more. + EuiIconMock + + (opens in a new tab or window) + + +
+