Invalidating all

HDFS permissions: The user ID that the user, must have execute permissions for all the relevant directories holding table data.

(A table could have data spread across multiple directories, or in unexpected paths, if it uses partitioning or specifies a for a table after adding or removing files in the associated S3 data directory.

See Using Impala with the Amazon S3 Filesystem for details about working with S3 tables.

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If the INVPCID type is 2, the logical processor invalidates mappings—including global translations—associated with all PCIDs. If the INVPCID type is 3, the logical processor invalidates mappings—except global transla- tions—associated with all PCIDs. The behavior of the instruction depends on the value of CR4. PCIDE = 0, the instruction invalidates all TLB entries associated with PCID 000H except those for global pages.

(The instruction may also invalidate global translations.) See Chapter 3 of the Intel 64 and IA-32 Architecture Software Developer’s Manual, Volume 2A for details of the INVPCID instruction. The instruction invalidates all TLB entries (including global entries) and all entries in all paging-structure caches (for all PCIDs) if it changes the value of CR0. It also invalidates all entries in all paging-structure caches associated with PCID 000H. PCIDE = 1 and bit 63 of the instruction’s source operand is 0, the instruction invalidates all TLB entries associated with the PCID specified in bits 11:0 of the instruction’s source operand except those for global pages.

It also invalidates all entries in all paging-structure caches associated with that PCID.

It is not required to invalidate entries in the TLBs and paging-structure caches that are associated with other PCIDs. If the paging structures map the linear address using a page larger than 4 KBytes and there are multiple TLB entries for that page (see Section 4.10.2.3), the instruction invalidates all of them. If the paging structures map the linear address using a page larger than 4 KBytes and there are multiple TLB entries for that page (see Section 4.10.2.3), the instruction invalidates all of them.

Required after a table is created through the Hive shell, before the table is available for Impala queries.

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