Blame SOURCES/0035-Issue-4581-A-failed-re-indexing-leaves-the-database-.patch

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From e6536aa27bfdc27cad07f6c5cd3312f0f0710c96 Mon Sep 17 00:00:00 2001
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From: tbordaz <tbordaz@redhat.com>
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Date: Mon, 1 Feb 2021 09:28:25 +0100
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Subject: [PATCH 3/3] Issue 4581 - A failed re-indexing leaves the database in
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 broken state (#4582)
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Bug description:
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	During reindex the numsubordinates attribute is not updated in parent entries.
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	The consequence is that the internal counter job->numsubordinates==0.
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	Later when indexing the ancestorid, the server can show the progression of this
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	indexing with a ratio using job->numsubordinates==0.
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	Division with 0 -> SIGFPE
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Fix description:
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	if the numsubordinates is NULL, log a message without a division.
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relates: https://github.com/389ds/389-ds-base/issues/4581
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Reviewed by: Pierre Rogier, Mark Reynolds, Simon Pichugin, Teko Mihinto (thanks !!)
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Platforms tested: F31
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---
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 .../slapd/back-ldbm/db-bdb/bdb_import.c       | 72 ++++++++++++++-----
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 1 file changed, 54 insertions(+), 18 deletions(-)
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diff --git a/ldap/servers/slapd/back-ldbm/db-bdb/bdb_import.c b/ldap/servers/slapd/back-ldbm/db-bdb/bdb_import.c
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index ba783ee59..7f484934f 100644
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--- a/ldap/servers/slapd/back-ldbm/db-bdb/bdb_import.c
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+++ b/ldap/servers/slapd/back-ldbm/db-bdb/bdb_import.c
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@@ -468,18 +468,30 @@ bdb_get_nonleaf_ids(backend *be, DB_TXN *txn, IDList **idl, ImportJob *job)
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         }
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         key_count++;
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         if (!(key_count % PROGRESS_INTERVAL)) {
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-            import_log_notice(job, SLAPI_LOG_INFO, "bdb_get_nonleaf_ids",
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-                              "Gathering ancestorid non-leaf IDs: processed %d%% (ID count %d)",
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-                              (key_count * 100 / job->numsubordinates), key_count);
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+            if (job->numsubordinates) {
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+                import_log_notice(job, SLAPI_LOG_INFO, "bdb_get_nonleaf_ids",
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+                                  "Gathering ancestorid non-leaf IDs: processed %d%% (ID count %d)",
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+                                  (key_count * 100 / job->numsubordinates), key_count);
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+            } else {
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+                import_log_notice(job, SLAPI_LOG_INFO, "bdb_get_nonleaf_ids",
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+                                  "Gathering ancestorid non-leaf IDs: processed %d ancestors...",
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+                                  key_count);
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+            }
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             started_progress_logging = 1;
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         }
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     } while (ret == 0 && !(job->flags & FLAG_ABORT));
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     if (started_progress_logging) {
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         /* finish what we started logging */
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-        import_log_notice(job, SLAPI_LOG_INFO, "bdb_get_nonleaf_ids",
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-                          "Gathering ancestorid non-leaf IDs: processed %d%% (ID count %d)",
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-                          (key_count * 100 / job->numsubordinates), key_count);
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+        if (job->numsubordinates) {
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+            import_log_notice(job, SLAPI_LOG_INFO, "bdb_get_nonleaf_ids",
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+                              "Gathering ancestorid non-leaf IDs: processed %d%% (ID count %d)",
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+                              (key_count * 100 / job->numsubordinates), key_count);
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+        } else {
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+            import_log_notice(job, SLAPI_LOG_INFO, "bdb_get_nonleaf_ids",
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+                              "Gathering ancestorid non-leaf IDs: processed %d ancestors",
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+                              key_count);
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+        }
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     }
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     import_log_notice(job, SLAPI_LOG_INFO, "bdb_get_nonleaf_ids",
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                       "Finished gathering ancestorid non-leaf IDs.");
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@@ -660,9 +672,15 @@ bdb_ancestorid_default_create_index(backend *be, ImportJob *job)
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         key_count++;
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         if (!(key_count % PROGRESS_INTERVAL)) {
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-            import_log_notice(job, SLAPI_LOG_INFO, "bdb_ancestorid_default_create_index",
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-                              "Creating ancestorid index: processed %d%% (ID count %d)",
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-                              (key_count * 100 / job->numsubordinates), key_count);
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+            if (job->numsubordinates) {
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+                import_log_notice(job, SLAPI_LOG_INFO, "bdb_ancestorid_default_create_index",
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+                                  "Creating ancestorid index: processed %d%% (ID count %d)",
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+                                  (key_count * 100 / job->numsubordinates), key_count);
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+            } else {
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+                import_log_notice(job, SLAPI_LOG_INFO, "bdb_ancestorid_default_create_index",
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+                                  "Creating ancestorid index: processed %d ancestors...",
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+                                  key_count);
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+            }
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             started_progress_logging = 1;
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         }
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@@ -743,9 +761,15 @@ out:
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     if (ret == 0) {
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         if (started_progress_logging) {
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             /* finish what we started logging */
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-            import_log_notice(job, SLAPI_LOG_INFO, "bdb_ancestorid_default_create_index",
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-                              "Creating ancestorid index: processed %d%% (ID count %d)",
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-                              (key_count * 100 / job->numsubordinates), key_count);
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+            if (job->numsubordinates) {
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+                import_log_notice(job, SLAPI_LOG_INFO, "bdb_ancestorid_default_create_index",
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+                                  "Creating ancestorid index: processed %d%% (ID count %d)",
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+                                  (key_count * 100 / job->numsubordinates), key_count);
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+            } else {
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+                import_log_notice(job, SLAPI_LOG_INFO, "bdb_ancestorid_default_create_index",
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+                                  "Creating ancestorid index: processed %d ancestors",
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+                                  key_count);
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+            }
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         }
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         import_log_notice(job, SLAPI_LOG_INFO, "bdb_ancestorid_default_create_index",
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                           "Created ancestorid index (old idl).");
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@@ -869,9 +893,15 @@ bdb_ancestorid_new_idl_create_index(backend *be, ImportJob *job)
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         key_count++;
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         if (!(key_count % PROGRESS_INTERVAL)) {
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-            import_log_notice(job, SLAPI_LOG_INFO, "bdb_ancestorid_new_idl_create_index",
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-                              "Creating ancestorid index: progress %d%% (ID count %d)",
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-                              (key_count * 100 / job->numsubordinates), key_count);
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+            if (job->numsubordinates) {
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+                import_log_notice(job, SLAPI_LOG_INFO, "bdb_ancestorid_new_idl_create_index",
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+                                  "Creating ancestorid index: progress %d%% (ID count %d)",
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+                                  (key_count * 100 / job->numsubordinates), key_count);
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+            } else {
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+                import_log_notice(job, SLAPI_LOG_INFO, "bdb_ancestorid_new_idl_create_index",
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+                                  "Creating ancestorid index: progress %d ancestors...",
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+                                  key_count);
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+            }
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             started_progress_logging = 1;
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         }
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@@ -932,9 +962,15 @@ out:
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     if (ret == 0) {
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         if (started_progress_logging) {
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             /* finish what we started logging */
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-            import_log_notice(job, SLAPI_LOG_INFO, "bdb_ancestorid_new_idl_create_index",
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-                              "Creating ancestorid index: processed %d%% (ID count %d)",
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-                              (key_count * 100 / job->numsubordinates), key_count);
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+            if (job->numsubordinates) {
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+                import_log_notice(job, SLAPI_LOG_INFO, "bdb_ancestorid_new_idl_create_index",
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+                                  "Creating ancestorid index: processed %d%% (ID count %d)",
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+                                  (key_count * 100 / job->numsubordinates), key_count);
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+            } else {
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+                import_log_notice(job, SLAPI_LOG_INFO, "bdb_ancestorid_new_idl_create_index",
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+                                  "Creating ancestorid index: processed %d ancestors",
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+                                  key_count);
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+            }
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         }
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         import_log_notice(job, SLAPI_LOG_INFO, "bdb_ancestorid_new_idl_create_index",
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                           "Created ancestorid index (new idl).");
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-- 
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2.26.2
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