Reading Fragment Info
You can get information about the fragments for any array as follows:
C
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Python
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#include <tiledb/tiledb.h>
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​
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// Create TileDB context
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tiledb_ctx_t* ctx;
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tiledb_ctx_alloc(NULL, &ctx);
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​
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// Create fragment info object
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tiledb_fragment_info_t* fragment_info;
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tiledb_fragment_info_alloc(ctx, array_name, &fragment_info);
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​
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// Load fragment
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tiledb_fragment_info_load(ctx, fragment_info);
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​
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// Get number of written fragments.
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uint32_t num;
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tiledb_fragment_info_get_fragment_num(ctx, fragment_info, &num);
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​
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// Get fragment URI
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const char* uri;
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tiledb_fragment_info_get_fragment_uri(ctx, fragment_info, 0, &uri);
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​
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// Get fragment size
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uint64_t size;
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tiledb_fragment_info_get_fragment_size(ctx, fragment_info, 0, &size);
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​
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// Check if the fragment is dense or sparse.
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int32_t dense;
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tiledb_fragment_info_get_dense(ctx, fragment_info, 0, &dense);
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​
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// Get the fragment timestamp range
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uint64_t start;
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uint64_t end;
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tiledb_fragment_info_get_timestamp_range(ctx, fragment_info, 0, &start, &end);
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​
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// Get the number of cells written to the fragment.
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uint64_t cell_num;
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tiledb_fragment_info_get_cell_num(ctx, fragment_info, 0, &cell_num);
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​
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// Get the format version of the fragment.
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uint32_t version;
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tiledb_fragment_info_get_version(ctx, fragment_info, 0, &version);
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​
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// Check if fragment has consolidated metadata.
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tiledb_fragment_info_has_consolidated_metadata(
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ctx, fragment_info, 0, &consolidated);
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​
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// Get the number of fragments with unconsolidated metadata
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// in the fragment info object.
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int32_t consolidated;
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uint32_t unconsolidated;
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tiledb_fragment_info_get_unconsolidated_metadata_num(
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ctx, fragment_info, &unconsolidated);
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​
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// Get non-empty domain from index
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uint64_t non_empty_dom[2];
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tiledb_fragment_info_get_non_empty_domain_from_index(
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ctx, fragment_info, 0, 0, &non_empty_dom[0]);
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​
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// Clean up
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tiledb_fragment_info_free(&fragment_info);
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tiledb_ctx_free(&ctx);
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#include <tiledb/fragment_info.h>
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​
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// Create fragment info object
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FragmentInfo fragment_info(ctx, array_uri);
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​
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// Load fragment
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fragment_info.load();
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​
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// Get number of written fragments.
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uint32_t num = fragment_info.fragment_num();
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​
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// Get URI of a fragment, a single parameter of the fragment index is used
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std::string uri = fragment_info.fragment_uri(0);
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​
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// Get fragment size
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uint64_t size = fragment_info.fragment_size(0);
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​
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// Check if the fragment is dense or sparse.
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bool dense = fragment_info.dense(0);
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​
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// Get the fragment timestamp range
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std::pair<uint64_t, uint64_t> timestamps = fragment_info.timestamp_range(0);
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​
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// Get the number of cells written to the fragment.
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uint64_t cell_num = fragment_info.cell_num(0);
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​
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// Get the format version of the fragment.
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uint32_t version = fragment_info.version(0);
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​
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// Check if fragment has consolidated metadata.
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bool consolidated = fragment_info.has_consolidated_metadata(0);
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​
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// Get the number of fragments with unconsolidated metadata
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// in the fragment info object.
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uint32_t unconsolidated = fragment_info.unconsolidated_metadata_num();
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​
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// Get non-empty domain from index
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uint64_t non_empty_dom[2];
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fragment_info.get_non_empty_domain(0, 0, &non_empty_dom[0]);
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import tiledb
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​
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fragments_info = tiledb.array_fragments(array_uri)
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​
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# Number of fragments
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print(len(fragments_info))
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​
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# URI of given fragment, with 0 <= idx < numfrag
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print(fragments_info.uri[idx])
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​
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# Timestamp range of given fragment, with 0 <= idx < numfrag
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print(fragments_info.timestamp_range[idx])
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## Fragment info
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fraginf <- tiledb_fragment_info(uri)
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​
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## number of fragments
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fi_num <- tiledb_fragment_info_get_num(fraginf)
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​
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## uri of fragment 'idx'
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fi_uri <- tiledb_fragment_info_uri(fraginf, idx)
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​
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## size of first fragment
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fi_sz <- tiledb_fragment_info_get_size(fraginf, idx)
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​
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## boolean for dense or sparse
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is_dense <- tiledb_fragment_info_dense(fraginf, idx)
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is_sparse <- tiledb_fragment_info_sparse(fraginf, idx)
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​
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## timestamp range for fragment
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rng <- tiledb_fragment_info_get_timestamp_range(fraginf, idx)
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​
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FragmentInfo info = new FragmentInfo(ctx, "<array-uri>");
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​
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// Number of fragments
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long numFragments = info.getFragmentNum();
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​
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// URI of given fragment, with 0 <= idx < numFragments
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for (int i = 0; i < numFragments; ++i) {
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System.out.println(info.getFragmentURI(i));
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Pair<Long, Long> range = info.getTimestampRange(i);
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}
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TODO
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Last modified 4mo ago
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