NSAmelchev commented on code in PR #10360:
URL: https://github.com/apache/ignite/pull/10360#discussion_r1018810799
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docs/_docs/snapshots/snapshots.adoc:
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@@ -95,6 +95,19 @@ increases the total amount of time for taking a snapshot.
However, this keeps th
See the link:perf-and-troubleshooting/thread-pools-tuning[Ignite Snapshot
Execution Pool,window=_blank] page for more details.
+=== Distributed properties
+
+The distributed properties listed in the table below allow you to configure
snapshots at runtime:
+
+[cols="1,3,1",opts="header"]
+|===
+|Parameter | Description | Default Value
+|`snapshotDeltaSortBatchSize`| Snapshot delta sort batch size in pages count.
If set then delta pages will be indexed
+by page index to almost sequential disk write on apply. This generates an
extra delta read. If value is non-positive or
+not set then delta pages will be applied directly. | 0
Review Comment:
I have refactored property to a sequential flag: `snapshotSequentialWrite`.
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modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/snapshot/IgniteSnapshotManager.java:
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@@ -394,6 +403,13 @@ public class IgniteSnapshotManager extends
GridCacheSharedManagerAdapter
/** Snapshot transfer rate limit in bytes/sec. */
private final DistributedLongProperty snapshotTransferRate =
detachedLongProperty(SNAPSHOT_TRANSFER_RATE_DMS_KEY);
+ /**
+ * Snapshot delta sort batch size in pages count. If set then delta pages
will be indexed by page index to almost
+ * sequential disk write on apply. This generates an extra delta read. If
value is non-positive or not set then delta
+ * pages will be applied directly.
+ */
+ private final DistributedIntegerProperty deltaSortBatch =
detachedIntegerProperty(SNAPSHOT_DELTA_SORT_BATCH_SIZE_KEY);
Review Comment:
I have refactored property to a sequential flag: `snapshotSequentialWrite`.
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